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  • 1. Aaboud, M.
    et al.
    Asimakopoulou, Eleni M.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bergeås Kuutmann, Elin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bokan, Petar
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Brenner, Richard
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ekelöf, Tord
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ellajosyula, Venugopal
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ellert, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ferrari, Arnaud
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Gradin, P. O. Joakim
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Isacson, Max
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Mårtensson, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Sales De Bruin, Pedro
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Zwalinski, L.
    Dijet azimuthal correlations and conditional yields in pp and p+Pb collisions at √sNN=5.02TeV with the ATLAS detector2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 3, artikkel-id 034903Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a measurement of forward-forward and forward-central dijet azimuthal angular correlations and conditional yields in proton-proton (pp) and proton-lead (p + Pb) collisions as a probe of the nuclear gluon density in regions where the fraction of the average momentum per nucleon carried by the parton entering the hard scattering is low. In these regions, gluon saturation can modify the rapidly increasing parton distribution function of the gluon. The analysis utilizes 25 pb(-1) of pp data and 360 mu b(-1) of p + Pb data, both at root S-NN = 5.02 TeV, collected in 2015 and 2016, respectively, with the ATLAS detector at the Large Hadron Collider. The measurement is performed in the center-of-mass frame of the nucleon-nucleon system in the rapidity range between -4.0 and 4.0 using the two highest transverse-momentum jets in each event, with the highest transverse-momentum jet restricted to the forward rapidity range. No significant broadening of azimuthal angular correlations is observed for forward-forward or forward-central dijets in p + Pb compared to pp collisions. For forward-forward jet pairs in the proton-going direction, the ratio of conditional yields in p + Pb collisions to those in pp collisions is suppressed by approximately 20%, with no significant dependence on the transverse momentum of the dijet system. No modification of conditional yields is observed for forward-central dijets.

  • 2. Aaboud, M.
    et al.
    Asimakopoulou, Eleni M.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bergeås Kuutmann, Elin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bokan, Petar
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Brenner, Richard
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ekelöf, Tord
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ellert, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ferrari, Arnaud
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Gradin, P. O. Joakim
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Isacson, Max F.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Mårtensson, Mikael U. F.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Sales De Bruin, Pedro
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Zwalinski, L.
    Measurement of the suppression and azimuthal anisotropy of muons from heavy-flavor decays in Pb plus Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 4, artikkel-id 044905Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ATLAS measurements of the production of muons from heavy-flavor decays in root s(NN) = 2.76 TeV Pb+Pb collisions and root s = 2.76 TeV pp collisions at the LHC are presented. Integrated luminosities of 0.14 nb(-1) and 570 nb(-1) are used for the Pb+Pb and pp measurements, respectively, which are performed over the muon transverse momentum range 4 < pT < 14 GeV and for five Pb+Pb centrality intervals. Backgrounds arising from in-flight pion and kaon decays, hadronic showers, and misreconstructed muons are statistically removed using a template-fitting procedure. The heavy-flavor muon differential cross sections and per-event yields are measured in pp and Pb+Pb collisions, respectively. The nuclear modification factor R-AA obtained from these is observed to be independent of pT, within uncertainties, and to be less than unity, which indicates suppressed production of heavy-flavor muons in Pb+Pb collisions. For the 10% most central Pb+Pb events, the measured R-AA is approximately 0.35. The azimuthal modulation of the heavy-flavor muon yields is also measured and the associated Fourier coefficients v(n) for n = 2, 3, and 4 are given as a function of pT and centrality. They vary slowly with pT and show a systematic variation with centrality which is characteristic of other anisotropy measurements, such as that observed for inclusive hadrons. The measured R-AA and v(n) values are also compared with theoretical calculations.

  • 3. Aaboud, M.
    et al.
    Asimakopoulou, Eleni M.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bergeås Kuutmann, Elin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bokan, Petar
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Brenner, Richard
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ekelöf, Tord
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ellert, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ferrari, Arnaud
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Gradin, P. O. Joakim
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Isacson, Max
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Mårtensson, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Sales De Bruin, Pedro
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Zwalinski, L.
    Measurement of jet fragmentation in Pb plus Pb and pp collisions at root S-NN=5.02 TeV with the ATLAS detector2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 2, artikkel-id 024908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a measurement of jet fragmentation functions in 0.49 nb(-1) of Pb +Pb collisions and 25 pb(-1) of pp collisions at root S-NN = 5.02 TeV collected in 2015 with the ATLAS detector at the LHC. These measurements provide insight into the jet quenching process in the quark-gluon plasma created in the aftermath of ultrarelativistic collisions between two nuclei. The modifications to the jet fragmentation functions are quantified by dividing the measurements in Pb+Pb collisions by baseline measurements in pp collisions. This ratio is studied as a function of the transverse momentum of the jet, the jet rapidity, and the centrality of the collision. In both collision systems, the jet fragmentation functions are measured for jets with transverse momentum between 126 and 398 GeV and with an absolute value of jet rapidity less than 2.1. An enhancement of particles carrying a small fraction of the jet momentum is observed, which increases with centrality and with increasing jet transverse momentum. Yields of particles carrying a very large fraction of the jet momentum are also observed to be enhanced. Between these two enhancements of the fragmentation functions a suppression of particles carrying an intermediate fraction of the jet momentum is observed in Pb+Pb collisions. A small dependence of the modifications on jet rapidity is observed.

  • 4. Aaboud, M.
    et al.
    Bergeås, Elin Kuutmann
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Brenner, Richard
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ekelöf, Tord
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ellert, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ferrari, Arnaud
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Gradin, P.O. Joakim
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Madsen, Alexander
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Öhman, Henrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Rangel-Smith, Camilla
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Zwalinski, L.
    Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at root s=5.02 and 13 TeV and p plus Pb collisions at root(NN)-N-s=5.02 TeV with the ATLAS detector2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 2, artikkel-id 024908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ATLAS measurements of two-particle correlations are presented for root s = 5.02 and 13 TeV pp collisions and for root(NN)-N-s = 5.02 TeV p + Pb collisions at the LHC. The correlation functions are measured as a function of relative azimuthal angle Delta phi, and pseudorapidity separation Delta eta, using charged particles detected within the pseudorapidity interval |eta| < 2.5. Azimuthal modulation in the long-range component of the correlation function, with | Delta eta| > 2, is studied using a template fitting procedure to remove a "back-to-back" contribution to the correlation function that primarily arises from hard-scattering processes. In addition to the elliptic, cos(2 Delta phi), modulation observed in a previous measurement, the pp correlation functions exhibit significant cos(3 Delta phi) and cos(4 Lambda phi) modulation. The Fourier coefficients v(n),(n) associated with the cos (n Lambda phi) modulation of the correlation functions for n = 2-4 are measured as a function of charged-particle multiplicity and charged-particle transverse momentum. The Fourier coefficients are observed to be compatible with cos(n phi) modulation of per-event singleparticle azimuthal angle distributions. The single-particle Fourier coefficients vn are measured as a function of charged-particle multiplicity, and charged-particle transverse momentum for n = 2-4. The integrated luminosities used in this analysis are, 64 nb(-1) for the root s = 13 TeV pp data, 170 nb(-1) for the root s = 5.02 TeV pp data, and 28 nb(-1) for the root(NN)-N-s = 5.02 TeV p + Pb data.

  • 5. Aaboud, M.
    et al.
    Bergeås Kuutmann, Elin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Bokan, Peter
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Brenner, Richard
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ekelöf, Tord
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ellert, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Ferrari, Arnaud
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Gradin, P.O. Joakim
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Madsen, Alexander
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Öhman, Henrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Rangel-Smith, Camilla
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    De Bruin, Pedro Sales
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Zwalinski, L.
    Femtoscopy with identified charged pions in proton-lead collisions at root s(NN)=5.02 TeV with ATLAS2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 6, artikkel-id 064908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bose-Einstein correlations between identified charged pions are measured for p+Pb collisions at root s(NN) = 5.02 TeV using data recorded by the ATLAS detector at the CERN Large Hadron Collider corresponding to a total integrated luminosity of 28 nb(-1). Pions are identified using ionization energy loss measured in the pixel detector. Two-particle correlation functions and the extracted source radii are presented as a function of collision centrality as well as the average transverse momentum (k(T)) and rapidity (y*(pi pi)) of the pair. Pairs are selected with a rapidity -2 < y*(pi pi) < 1 and with an average transverse momentum 0.1 < k(T) < 0.8 GeV. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair k(T). A correlation of the radii with the local charged-particle density is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a selection of initial-geometry models. The cross term R-ol is measured as a function of rapidity, and a nonzero value is observed with 5.1 sigma combined significance for -1 < y*pi pi < 1 in the most central events.

  • 6. Aaboud, M.
    et al.
    Jensen, Bengt
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Ohm, Christian
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Ripellino, Giulia
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Sidebo, P. Edvin
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Strandberg, Jonas
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Zwalinski, L.
    CERN, Geneva, Switzerland..
    et al.,
    Dijet azimuthal correlations and conditional yields in pp and p plus Pb collisions ats root S-NN=5.02 TeV with the ATLAS detector2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 3, artikkel-id 034903Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a measurement of forward-forward and forward-central dijet azimuthal angular correlations and conditional yields in proton-proton (pp) and proton-lead (p + Pb) collisions as a probe of the nuclear gluon density in regions where the fraction of the average momentum per nucleon carried by the parton entering the hard scattering is low. In these regions, gluon saturation can modify the rapidly increasing parton distribution function of the gluon. The analysis utilizes 25 pb(-1) of pp data and 360 mu b(-1) of p + Pb data, both at root S-NN = 5.02 TeV, collected in 2015 and 2016, respectively, with the ATLAS detector at the Large Hadron Collider. The measurement is performed in the center-of-mass frame of the nucleon-nucleon system in the rapidity range between -4.0 and 4.0 using the two highest transverse-momentum jets in each event, with the highest transverse-momentum jet restricted to the forward rapidity range. No significant broadening of azimuthal angular correlations is observed for forward-forward or forward-central dijets in p + Pb compared to pp collisions. For forward-forward jet pairs in the proton-going direction, the ratio of conditional yields in p + Pb collisions to those in pp collisions is suppressed by approximately 20%, with no significant dependence on the transverse momentum of the dijet system. No modification of conditional yields is observed for forward-central dijets.

  • 7. Aaboud, M.
    et al.
    Kastanas, Konstatinos A.
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Lund-Jensen, Bengt
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Ohm, Christian
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Ripellino, Giulia
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Sidebo, P. Edvin
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Strandberg, Jonas
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Zwalinski, L.
    et al.,
    Measurement of jet fragmentation in Pb plus Pb and pp collisions at root S-NN=5.02 TeV with the ATLAS detector2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 2, artikkel-id 024908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a measurement of jet fragmentation functions in 0.49 nb(-1) of Pb +Pb collisions and 25 pb(-1) of pp collisions at root S-NN = 5.02 TeV collected in 2015 with the ATLAS detector at the LHC. These measurements provide insight into the jet quenching process in the quark-gluon plasma created in the aftermath of ultrarelativistic collisions between two nuclei. The modifications to the jet fragmentation functions are quantified by dividing the measurements in Pb+Pb collisions by baseline measurements in pp collisions. This ratio is studied as a function of the transverse momentum of the jet, the jet rapidity, and the centrality of the collision. In both collision systems, the jet fragmentation functions are measured for jets with transverse momentum between 126 and 398 GeV and with an absolute value of jet rapidity less than 2.1. An enhancement of particles carrying a small fraction of the jet momentum is observed, which increases with centrality and with increasing jet transverse momentum. Yields of particles carrying a very large fraction of the jet momentum are also observed to be enhanced. Between these two enhancements of the fragmentation functions a suppression of particles carrying an intermediate fraction of the jet momentum is observed in Pb+Pb collisions. A small dependence of the modifications on jet rapidity is observed.

  • 8. Aaboud, M.
    et al.
    Lund-Jensen, Bengt
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Sidebo, P. Edvin
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Strandberg, Jonas
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
    Zwalinski, L.
    et al.,
    Femtoscopy with identified charged pions in proton-lead collisions at root s(NN)=5.02 TeV with ATLAS2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 6Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bose-Einstein correlations between identified charged pions are measured for p+Pb collisions at root s(NN) = 5.02 TeV using data recorded by the ATLAS detector at the CERN Large Hadron Collider corresponding to a total integrated luminosity of 28 nb(-1). Pions are identified using ionization energy loss measured in the pixel detector. Two-particle correlation functions and the extracted source radii are presented as a function of collision centrality as well as the average transverse momentum (k(T)) and rapidity (y*(pi pi)) of the pair. Pairs are selected with a rapidity -2 < y*(pi pi) < 1 and with an average transverse momentum 0.1 < k(T) < 0.8 GeV. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair k(T). A correlation of the radii with the local charged-particle density is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a selection of initial-geometry models. The cross term R-ol is measured as a function of rapidity, and a nonzero value is observed with 5.1 sigma combined significance for -1 < y*pi pi < 1 in the most central events.

  • 9.
    Abulaiti, Yiming
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åkerstedt, Henrik
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bertoli, Gabriele
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bessidskaia Bylund, Olga
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Carney, Rebecca M. D.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Clément, Christophe
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Cribbs, Wayne A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Gellerstedt, Karl
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Lundberg, Olof
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Molander, Simon
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shcherbakova, Anna
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Valdes Santurio, Eduardo
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Measurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p plus Pb collisions with the ATLAS detector at the CERN Large Hadron Collider2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 2, artikkel-id 024904Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A detailed study of multiparticle azimuthal correlations is presented using pp data at root s = 5.02 and 13 TeV, and p+Pb data at root s(NN) = 5.02 TeV, recorded with the ATLAS detector at the CERN Large Hadron Collider. The azimuthal correlations are probed using four-particle cumulants c(n){4} and flow coefficients v(n){4} = (-c(n){4})(1/4) for n = 2 and 3, with the goal of extracting long-range multiparticle azimuthal correlation signals and suppressing the short-range correlations. The values of c(n){4} are obtained as a function of the average number of charged particles per event, < N-ch >, using the recently proposed two-subevent and three-subevent cumulant methods, and compared with results obtained with the standard cumulant method. The standard method is found to be strongly biased by short-range correlations, which originate mostly from jetswith a positive contribution to c(n){4}. The threesubevent method, on the other hand, is found to be least sensitive to short-range correlations. The three-subevent method gives a negative c(2){4}, and therefore a well-defined v(2){4}, nearly independent of < N-ch >, which implies that the long-range multiparticle azimuthal correlations persist to events with low multiplicity. Furthermore, v(2){4} is found to be smaller than the v(2){2} measured using the two-particle correlation method, as expected for long-range collective behavior. Finally, the measured values of v(2){4} and v(2){2} are used to estimate the number of sources relevant for the initial eccentricity in the collision geometry. The results based on the subevent cumulant technique provide direct evidence, in small collision systems, for a long-range collectivity involving many particles distributed across a broad rapidity interval.

  • 10.
    Abulaiti, Yiming
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åkerstedt, Henrik
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åsman, Barbro
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bendtz, Katarina
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bertoli, Gabriele
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bessidskaia Bylund, Olga
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Carney, Rebecca M. D.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Clement, Christophe
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Cribbs, Wayne A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Gellerstedt, Karl
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Lundberg, Olof
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Molander, Simon
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pani, Priscilla
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pöttgen, Ruth
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Rossetti, Valerio
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shcherbakova, Anna
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Santurio, E. Valdes
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at root s=5.02 and 13 TeV and p plus Pb collisions at root(NN)-N-s=5.02 TeV with the ATLAS detector2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 2, artikkel-id 024908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ATLAS measurements of two-particle correlations are presented for root s = 5.02 and 13 TeV pp collisions and for root(NN)-N-s = 5.02 TeV p + Pb collisions at the LHC. The correlation functions are measured as a function of relative azimuthal angle Delta phi, and pseudorapidity separation Delta eta, using charged particles detected within the pseudorapidity interval |eta| < 2.5. Azimuthal modulation in the long-range component of the correlation function, with | Delta eta| > 2, is studied using a template fitting procedure to remove a back-to-back contribution to the correlation function that primarily arises from hard-scattering processes. In addition to the elliptic, cos(2 Delta phi), modulation observed in a previous measurement, the pp correlation functions exhibit significant cos(3 Delta phi) and cos(4 Lambda phi) modulation. The Fourier coefficients v(n),(n) associated with the cos (n Lambda phi) modulation of the correlation functions for n = 2-4 are measured as a function of charged-particle multiplicity and charged-particle transverse momentum. The Fourier coefficients are observed to be compatible with cos(n phi) modulation of per-event singleparticle azimuthal angle distributions. The single-particle Fourier coefficients vn are measured as a function of charged-particle multiplicity, and charged-particle transverse momentum for n = 2-4. The integrated luminosities used in this analysis are, 64 nb(-1) for the root s = 13 TeV pp data, 170 nb(-1) for the root s = 5.02 TeV pp data, and 28 nb(-1) for the root(NN)-N-s = 5.02 TeV p + Pb data.

  • 11.
    Abulaiti, Yiming
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åkerstedt, Henrik
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åsman, Barbro
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bendtz, Katarina
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bertoli, Gabriele
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bessidskaia Bylund, Olga
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Clément, Christophe
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Cribbs, Wayne A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Lundberg, Olof
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Molander, Simon
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pani, Priscilla
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pöttgen, Ruth
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Rossetti, Valerio
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shcherbakova, Anna
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Valdes Santurio, Eduardo
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Femtoscopy with identified charged pions in proton-lead collisions at root s(NN)=5.02 TeV with ATLAS2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 6, artikkel-id 064908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bose-Einstein correlations between identified charged pions are measured for p+Pb collisions at root s(NN) = 5.02 TeV using data recorded by the ATLAS detector at the CERN Large Hadron Collider corresponding to a total integrated luminosity of 28 nb(-1). Pions are identified using ionization energy loss measured in the pixel detector. Two-particle correlation functions and the extracted source radii are presented as a function of collision centrality as well as the average transverse momentum (k(T)) and rapidity (y*(pi pi)) of the pair. Pairs are selected with a rapidity -2 < y*(pi pi) < 1 and with an average transverse momentum 0.1 < k(T) < 0.8 GeV. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair k(T). A correlation of the radii with the local charged-particle density is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a selection of initial-geometry models. The cross term R-ol is measured as a function of rapidity, and a nonzero value is observed with 5.1 sigma combined significance for -1 < y*pi pi < 1 in the most central events.

  • 12.
    Abulaiti, Yiming
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åkerstedt, Henrik
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Åsman, Barbro
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bendtz, Katarina
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bertoli, Gabriele
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bessidskaia Bylund, Olga
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Clément, Christophe
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Cribbs, Wayne A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Lundberg, Olof
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Molander, Simon
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pani, Priscilla
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pöttgen, Ruth
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Rossetti, Valerio
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shcherbakova, Anna
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Valdes Santurio, Eduardo
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Measurement of forward-backward multiplicity correlations in lead-lead, proton-lead, and proton-proton collisions with the ATLAS detector2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 95, nr 6, artikkel-id 064914Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Two-particle pseudorapidity correlations are measured in root s(NN) = 2.76 TeV Pb + Pb, root s(NN) = 5.02 TeV p+Pb, and root s = 13 TeV pp collisions at the Large Hadron Collider (LHC), with total integrated luminosities of approximately 7 mu b(-1), 28 nb(-1), and 65 nb(-1), respectively. The correlation function CN(eta(1),eta(2))is measured as a function of event multiplicity using charged particles in the pseudorapidity range |eta| < 2.4. The correlation function contains a significant short-range component, which is estimated and subtracted. After removal of the short-range component, the shape of the correlation function is described approximately by 1 + < a(1)(2)>(1/2) eta(1) eta(2) in all collision systems over the full multiplicity range. The values of < a(1)(2)>(1/2) are consistent for the opposite-charge pairs and same-charge pairs, and for the three collision systems at similar multiplicity. The values of < a(1)(2)>(1/2) and the magnitude of the short-range component both follow a power-law dependence on the event multiplicity. The short-range component in p + Pb collisions, after symmetrizing the proton and lead directions, is found to be smaller at a given eta than in pp collisions with comparable multiplicity.

  • 13.
    Adlarson, Patrik
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Augustyniak, W.
    Natl Ctr Nucl Res, Div Nucl Phys, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Bardan, W.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Bashkanov, M.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
    Bergmann, F. S.
    Westfalische Wilhelms Univ Munster, Inst Kernphys, Wilhelm Klemm Str 9, D-48149 Munster, Germany.
    Berlowski, M.
    Natl Ctr Nucl Res, High Energy Phys Div, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Bondar, A.
    RAS, SB, Budker Inst Nucl Phys, 11 Acad Lavrentieva Pr, Novosibirsk 630090, Russia;Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia.
    Buescher, M.
    Forschungszentrum Julich, Peter Grunberg Inst, PGI 6 Elekt Eigenschaften, D-52425 Julich, Germany;Heinrich Heine Univ Dusseldorf, Inst Laser & Plasmaphys, Univ Str 1, D-40225 Dusseldorf, Germany.
    Calén, Hans
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Ciepal, I.
    Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.
    Clement, H.
    Eberhard Karls Univ Tubingen, Inst Phys, Morgenstelle 14, D-72076 Tubingen, Germany;Univ Tubingen, Inst Phys, Kepler Ctr Astro & Particle Phys, Morgenstelle 14, D-72076 Tubingen, Germany.
    Czerwinski, E.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Demmich, K.
    Westfalische Wilhelms Univ Munster, Inst Kernphys, Wilhelm Klemm Str 9, D-48149 Munster, Germany.
    Engels, R.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Erven, A.
    Forschungszentrum Julich, Zent Inst Engn Elekt & Analyt, D-52425 Julich, Germany.
    Erven, W.
    Forschungszentrum Julich, Zent Inst Engn Elekt & Analyt, D-52425 Julich, Germany.
    Eyrich, W.
    Friedrich Alexander Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany.
    Fedorets, P.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Natl Res Ctr Kurchatov Inst, Inst Theoret & Expt Phys, 25 Bolshaya Cheremushkinskaya Str, Moscow 117218, Russia.
    Foehl, K.
    Justus Liebig Univ Giessen, Inst Phys 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany.
    Fransson, Kjell
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Goldenbaum, F.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Goswami, A.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Indian Inst Technol Indore, Discipline Phys, Khandwa Rd, Indore 453552, Madhya Pradesh, India.
    Grigoryev, K.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Natl Res Ctr Kurchatov Inst, High Energy Phys Div, Petersburg Nucl Phys Inst, 1 Mkr Orlova roshcha, Gatchina 188300, Leningradskaya, Russia.
    Heijkenskjöld, Lena
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik. Johannes Gutenberg Univ Mainz, Inst Kernphys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany.
    Hejny, V.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Huesken, N.
    Westfalische Wilhelms Univ Munster, Inst Kernphys, Wilhelm Klemm Str 9, D-48149 Munster, Germany.
    Jarczyk, L.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Johansson, Tord
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Kamys, B.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Kemmerling, G.
    Forschungszentrum Julich, Zent Inst Engn Elekt & Analyt, D-52425 Julich, Germany;Forschungszentrum Julich, JCNS, D-52425 Julich, Germany.
    Khoukaz, A.
    Westfalische Wilhelms Univ Munster, Inst Kernphys, Wilhelm Klemm Str 9, D-48149 Munster, Germany.
    Khreptak, O.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Kirillov, D. A.
    Joint Inst Nucl Phys, Veksler & Baldin Lab High Energiy Phys, 6 Joliot Curie, Dubna 141980, Russia.
    Kistryn, S.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Kleines, H.
    Forschungszentrum Julich, Zent Inst Engn Elekt & Analyt, D-52425 Julich, Germany;Forschungszentrum Julich, JCNS, D-52425 Julich, Germany.
    Klos, B.
    Univ Silesia, August Chelkowski Inst Phys, Ul 75 Pulku Piechoty 1, PL-41500 Chorzow, Poland.
    Krzemien, W.
    Natl Ctr Nucl Res, High Energy Phys Div, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Kulessa, P.
    Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.
    Kupsc, Andrzej
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik. Natl Ctr Nucl Res, High Energy Phys Div, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Lalwani, K.
    Malaviya Natl Inst Technol Jaipur, Dept Phys, JLN Marg, Jaipur 302017, Rajasthan, India.
    Lersch, D.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Florida State Univ, Dept Phys, 77 Chieftan Way, Tallahassee, FL 32306 USA.
    Lorentz, B.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Magiera, A.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Maier, R.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Forschungszentrum Julich, JARA FAME, Julich Aachen Res Alliance, D-52425 Julich, Germany;Rhein Westfal TH Aachen, D-52056 Aachen, Germany.
    Marciniewski, Pawel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Marianski, B.
    Natl Ctr Nucl Res, Div Nucl Phys, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Morsch, H. -P
    Moskal, P.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Ohm, H.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Parol, W.
    Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.
    del Rio, E. Perez
    Eberhard Karls Univ Tubingen, Inst Phys, Morgenstelle 14, D-72076 Tubingen, Germany;Univ Tubingen, Inst Phys, Kepler Ctr Astro & Particle Phys, Morgenstelle 14, D-72076 Tubingen, Germany;Ist Nazl Fis Nucl, Lab Nazl Frascati, Via E Fermi 40, I-00044 Frascati, Italy.
    Piskunov, N. M.
    Joint Inst Nucl Phys, Veksler & Baldin Lab High Energiy Phys, 6 Joliot Curie, Dubna 141980, Russia.
    Prasuhn, D.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Pszczel, Damian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik. Natl Ctr Nucl Res, High Energy Phys Div, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Pysz, K.
    Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.
    Ritman, J.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Forschungszentrum Julich, JARA FAME, Julich Aachen Res Alliance, D-52425 Julich, Germany;Rhein Westfal TH Aachen, D-52056 Aachen, Germany;Ruhr Univ Bochum, Inst Expt Phys 1, Univ Str 150, D-44780 Bochum, Germany.
    Roy, A.
    Indian Inst Technol Indore, Discipline Phys, Khandwa Rd, Indore 453552, Madhya Pradesh, India.
    Rudy, Z.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Rundel, O.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Sawant, S.
    Indian Inst Technol, Dept Phys, Mumbai 400076, Maharashtra, India.
    Schadmand, S.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Schatti-Ozerianska, I.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Sefzick, T.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Serdyuk, V.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Shwartz, B.
    RAS, SB, Budker Inst Nucl Phys, 11 Acad Lavrentieva Pr, Novosibirsk 630090, Russia;Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia.
    Skorodko, T.
    Eberhard Karls Univ Tubingen, Inst Phys, Morgenstelle 14, D-72076 Tubingen, Germany;Univ Tubingen, Inst Phys, Kepler Ctr Astro & Particle Phys, Morgenstelle 14, D-72076 Tubingen, Germany;Tomsk State Univ, Dept Phys, 36 Lenin Ave, Tomsk 634050, Russia.
    Skurzok, M.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Smyrski, J.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Sopov, V.
    Natl Res Ctr Kurchatov Inst, Inst Theoret & Expt Phys, 25 Bolshaya Cheremushkinskaya Str, Moscow 117218, Russia.
    Stassen, R.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Stepaniak, J.
    Natl Ctr Nucl Res, High Energy Phys Div, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Stephan, E.
    Univ Silesia, August Chelkowski Inst Phys, Ul 75 Pulku Piechoty 1, PL-41500 Chorzow, Poland.
    Sterzenbach, G.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Stockhorst, H.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Stroeher, H.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany;Forschungszentrum Julich, JARA FAME, Julich Aachen Res Alliance, D-52425 Julich, Germany;Rhein Westfal TH Aachen, D-52056 Aachen, Germany.
    Szczurek, A.
    Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.
    Trzcinski, A.
    Natl Ctr Nucl Res, Div Nucl Phys, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Wolke, Magnus
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Wronska, A.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Wuestner, P.
    Forschungszentrum Julich, Zent Inst Engn Elekt & Analyt, D-52425 Julich, Germany.
    Yamamoto, A.
    High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan.
    Zabierowski, J.
    Natl Ctr Nucl Res, Div Astrophys, Box 447, PL-90950 Lodz, Poland.
    Zielinski, M. J.
    Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
    Zlomanczuk, Jozef
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Zupranski, P.
    Natl Ctr Nucl Res, Div Nucl Phys, Ul Hoza 69, PL-00681 Warsaw, Poland.
    Zurek, M.
    Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
    Examination of the production of an isotensor dibaryon in the pp -> pp pi(+)pi(-) reaction2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 2, artikkel-id 025201Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The quasifree pp -> pp pi(+)pi(-) reaction has been measured by means of pd collisions at T-p = 1.2 GeV using the WASA detector setup at COSY enabling exclusive and kinematically complete measurements. Total and differential cross sections have been extracted for the energy region T-p = 1.08-1.36 GeV (root s = 2.35-2.46 GeV) covering thus the regions of N* (1440 ) and Delta(1232)Delta(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange as well as isospin relations based on the pp -> pp pi(0)pi(0) data underpredict substantially the measured total cross section. The calculations are also at variance with specific experimental differential cross sections. An isotensor Delta N dibaryon resonance with I(J(P)) = 2(1(+) ) produced associatedly with a pion is able to overcome these deficiencies. Such a dibaryon was predicted by Dyson and Xuong [Phys. Rev. Lett. 13, 815 (1964)] and more recently calculated by A. Gal and H. Garcilazo [Nucl. Phys. A 928, 73 (2014)].

  • 14. Auranen, K.
    et al.
    Uusitalo, J.
    Juutinen, S.
    Badran, H.
    Bisso, F. Defranchi
    Cox, D.
    Grahn, T.
    Greenlees, P. T.
    Herzan, A.
    Jakobsson, Ulrika
    KTH, Skolan för teknikvetenskap (SCI), Fysik. University of Helsinki, Finland.
    Julin, R.
    Konki, J.
    Leino, M.
    Lightfoot, A.
    Mallaburn, M. J.
    Neuvonen, O.
    Pakarinen, J.
    Papadakis, P.
    Partanen, J.
    Rahkila, P.
    Sandzelius, M.
    Saren, J.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Wang, Y. K.
    Prompt and delayed spectroscopy of At-203: Observation of a shears band and a 29/2(+) isomeric state2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 2, artikkel-id 024301Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of At-203 (N = 118) significantly. We have observed an isomeric [tau = 14.1(3) mu s] state with a spin and parity of 29/2(+). The isomeric state is suggested to originate from the pi(h(9/2)) circle times |Po-202; 11(-)> coupling, and it is depopulated through 286 keV E2 and 366 keV E3 transitions. In addition, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism.

  • 15. Auranen, K.
    et al.
    Uusitalo, J.
    Juutinen, S.
    Badran, H.
    Bisso, F. Defranchi
    Cox, D.
    Grahn, T.
    Greenlees, P. T.
    Herzan, A.
    Jakobsson, Ulrika
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Julin, R.
    Konki, J.
    Leino, M.
    Lightfoot, A.
    Mallaburn, M.
    Neuvonen, O.
    Pakarinen, J.
    Papadakis, P.
    Partanen, J.
    Rahkila, P.
    Sandzelius, M.
    Saren, J.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Experimental study of isomeric intruder 1/2(+) states in At-197,At-2032017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 95, nr 4, artikkel-id 044311Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A newly observed isomeric intruder 1/2(+) state [T-1/2 = 3.5( 6) ms] is identified in At-203 using a gas-filled recoil separator and fusion-evaporation reactions. The isomer is depopulated through a cascade of E3 and mixed M1/E2 transitions to the 9/2(-) ground state, and it is suggested to originate from the pi(s(1/2))(-1) configuration. In addition, the structures above the 1/2(+) state in At-203 and At-197 are studied using in-beam gamma-ray spectroscopy, recoil-decay tagging, and recoil-isomer decay tagging methods. The 1/2(+) state is fed from 3/2(+) and 5/2(+) states, and the origin of these states are discussed.

  • 16. Badran, H.
    et al.
    Scholey, C.
    Uusitalo, J.
    Auranen, K.
    Grahn, T.
    Greenlees, P. T.
    Herzan, A.
    Jakobsson, Ulrika
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Julin, R.
    Juutinen, S.
    Konki, J.
    Leino, M.
    Mallaburn, M. J.
    Pakarinen, J.
    Papadakis, P.
    Partanen, J.
    Peura, P.
    Rahkila, P.
    Sandzelius, M.
    Saren, J.
    Sorri, J.
    Stolze, S.
    Decay spectroscopy of Pb-179(82)97 and evidence for a 9/2(-) intruder state in Tl-179(81)982017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 6, artikkel-id 064314Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The very neutron-deficient isobars Pb-179 and Tl-179 have been produced using the fusion-evaporation reactions Pd-104(Kr-78,xpyn), where x <= 1 and y >= 2. The gas-filled separator RITU was employed to transport and separate the recoiling nuclei of interest from the scattered beam and unwanted products. The GREAT spectrometer was used to study the decay properties through alpha-alpha and alpha-gamma correlations, which has allowed the ground state of Pb-179 to be assigned as I-pi = 9/2(-). The decay of Pb-179 was measured to have an alpha-particle energy and half-life of E-alpha = 7348(5) keV and t(1/2) = 2.7(2) ms, respectively. A search for a nu i(13/2) state in Pb-179 was performed, but only a limit of excitation energy and half-life was obtained. In Tl-179 a t(1/2) = 114(-10)(+18) ns isomeric state, likely at an excitation energy of 904.5(9) keV, was identified and is tentatively assigned to be a 9/2(-) proton intruder state.

  • 17.
    Bertoli, Gabriele
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bessidskaia Bylund, Olga
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Carney, Rebecca M. D.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Carney, Rebecca M. D.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Gellerstedt, Karl
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Molander, Simon
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pasuwan, Patrawan
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Valdes Santurio, Eduardo
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Measurement of the suppression and azimuthal anisotropy of muons from heavy-flavor decays in Pb plus Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 4, artikkel-id 044905Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ATLAS measurements of the production of muons from heavy-flavor decays in root s(NN) = 2.76 TeV Pb+Pb collisions and root s = 2.76 TeV pp collisions at the LHC are presented. Integrated luminosities of 0.14 nb(-1) and 570 nb(-1) are used for the Pb+Pb and pp measurements, respectively, which are performed over the muon transverse momentum range 4 < pT < 14 GeV and for five Pb+Pb centrality intervals. Backgrounds arising from in-flight pion and kaon decays, hadronic showers, and misreconstructed muons are statistically removed using a template-fitting procedure. The heavy-flavor muon differential cross sections and per-event yields are measured in pp and Pb+Pb collisions, respectively. The nuclear modification factor R-AA obtained from these is observed to be independent of pT, within uncertainties, and to be less than unity, which indicates suppressed production of heavy-flavor muons in Pb+Pb collisions. For the 10% most central Pb+Pb events, the measured R-AA is approximately 0.35. The azimuthal modulation of the heavy-flavor muon yields is also measured and the associated Fourier coefficients v(n) for n = 2, 3, and 4 are given as a function of pT and centrality. They vary slowly with pT and show a systematic variation with centrality which is characteristic of other anisotropy measurements, such as that observed for inclusive hadrons. The measured R-AA and v(n) values are also compared with theoretical calculations.

  • 18.
    Bertoli, Gabriele
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bessidskaia Bylund, Olga
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Carney, Rebecca M. D.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Clément, Christophe
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Gellerstedt, Karl
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Molander, Simon
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pasuwan, Patrawan
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Valdes Santurio, Eduardo
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Measurement of jet fragmentation in Pb plus Pb and pp collisions at root S-NN=5.02 TeV with the ATLAS detector2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 2, artikkel-id 024908Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a measurement of jet fragmentation functions in 0.49 nb(-1) of Pb +Pb collisions and 25 pb(-1) of pp collisions at root S-NN = 5.02 TeV collected in 2015 with the ATLAS detector at the LHC. These measurements provide insight into the jet quenching process in the quark-gluon plasma created in the aftermath of ultrarelativistic collisions between two nuclei. The modifications to the jet fragmentation functions are quantified by dividing the measurements in Pb+Pb collisions by baseline measurements in pp collisions. This ratio is studied as a function of the transverse momentum of the jet, the jet rapidity, and the centrality of the collision. In both collision systems, the jet fragmentation functions are measured for jets with transverse momentum between 126 and 398 GeV and with an absolute value of jet rapidity less than 2.1. An enhancement of particles carrying a small fraction of the jet momentum is observed, which increases with centrality and with increasing jet transverse momentum. Yields of particles carrying a very large fraction of the jet momentum are also observed to be enhanced. Between these two enhancements of the fragmentation functions a suppression of particles carrying an intermediate fraction of the jet momentum is observed in Pb+Pb collisions. A small dependence of the modifications on jet rapidity is observed.

  • 19.
    Bertoli, Gabriele
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Bohm, Christian
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Carney, Rebecca M. D.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Clément, Christophe
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Hellman, Sten
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Jon-And, Kerstin
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Kastanas, Alexandros
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Milstead, David A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Moa, Torbjörn
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Pasuwan, Patrawan
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Shaikh, Nabila W.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Silverstein, Samuel B.
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Sjölin, Jörgen
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Strandberg, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Ughetto, Michaël
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Valdés Santurio, Eduardo
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Wallängen, Veronica
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Dijet azimuthal correlations and conditional yields in pp and p plus Pb collisions ats root S-NN=5.02 TeV with the ATLAS detector2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 3, artikkel-id 034903Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a measurement of forward-forward and forward-central dijet azimuthal angular correlations and conditional yields in proton-proton (pp) and proton-lead (p + Pb) collisions as a probe of the nuclear gluon density in regions where the fraction of the average momentum per nucleon carried by the parton entering the hard scattering is low. In these regions, gluon saturation can modify the rapidly increasing parton distribution function of the gluon. The analysis utilizes 25 pb(-1) of pp data and 360 mu b(-1) of p + Pb data, both at root S-NN = 5.02 TeV, collected in 2015 and 2016, respectively, with the ATLAS detector at the Large Hadron Collider. The measurement is performed in the center-of-mass frame of the nucleon-nucleon system in the rapidity range between -4.0 and 4.0 using the two highest transverse-momentum jets in each event, with the highest transverse-momentum jet restricted to the forward rapidity range. No significant broadening of azimuthal angular correlations is observed for forward-forward or forward-central dijets in p + Pb compared to pp collisions. For forward-forward jet pairs in the proton-going direction, the ratio of conditional yields in p + Pb collisions to those in pp collisions is suppressed by approximately 20%, with no significant dependence on the transverse momentum of the dijet system. No modification of conditional yields is observed for forward-central dijets.

  • 20.
    Bhagwat, Ameeya
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik. UM-DAE Centre for Excellence in Basic Sciences, India.
    Liotta, Roberto
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Cluster decay in the superallowed alpha decay region2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 3, artikkel-id 031302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The emissions of a particles and protons are the dominant decay channels in the neutron-deficient nuclei corresponding to the sdg major shell. The possibility of cluster emission is explored here. It is shown that the cluster decay mode has a small yet sizable branching ratio.

  • 21.
    Biswas, S.
    et al.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Lemasson, A.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Rejmund, M.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Navin, A.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Kim, Y. H.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France.;Inst Laue Langevin, F-38042 Grenoble, France..
    Michelagnoli, C.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France.;Inst Laue Langevin, F-38042 Grenoble, France..
    Stefan, I
    Univ Paris Saclay, Univ Paris Sud, Inst Phys Nucl, IN2P3,CNRS, F-91406 Orsay, France..
    Banik, R.
    Variable Energy Cyclotron Ctr, 1-AF Bidhan Nagar, Kolkata 700064, India.;Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400094, Maharashtra, India..
    Bednarczyk, P.
    Inst Nucl Phys PAN, Krakow, Poland..
    Bhattacharya, S.
    Variable Energy Cyclotron Ctr, 1-AF Bidhan Nagar, Kolkata 700064, India.;Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400094, Maharashtra, India..
    Bhattacharyya, S.
    Variable Energy Cyclotron Ctr, 1-AF Bidhan Nagar, Kolkata 700064, India.;Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400094, Maharashtra, India..
    Clement, E.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Crawford, H. L.
    Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA..
    de France, G.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Fallon, P.
    Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA..
    Fremont, G.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Goupil, J.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Jacquot, B.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Li, H. J.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Ljungvall, J.
    Univ Paris Saclay, Univ Paris Sud, CSNSM, CNRS,IN2P3, F-91405 Orsay, France..
    Maj, A.
    Inst Nucl Phys PAN, Krakow, Poland..
    Menager, A.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    More, V
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Palit, R.
    Tata Inst Fundamental Res, Dept Nucl & Atom Phys, Mumbai 400005, Maharashtra, India..
    Perez-Vidal, R. M.
    Univ Valencia, CSIC, Inst Fis Corpuscular, E-46980 Valencia, Spain..
    Ropert, J.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Barrientos, D.
    CERN, CH-1211 Geneva 23, Switzerland..
    Benzoni, G.
    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy..
    Birkenbach, B.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Boston, A. J.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Boston, H. C.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Collado, J.
    Univ Valencia, Dept Ingn Elect, Valencia, Spain..
    Cullen, D. M.
    Univ Manchester, Schuster Lab, Nucl Phys Grp, Manchester M13 9PL, Lancs, England..
    Desesquelles, P.
    Univ Paris Saclay, Univ Paris Sud, CSNSM, CNRS,IN2P3, F-91405 Orsay, France..
    Domingo-Pardo, C.
    Univ Valencia, CSIC, Inst Fis Corpuscular, E-46980 Valencia, Spain..
    Dudouet, J.
    Univ Paris Saclay, Univ Paris Sud, CSNSM, CNRS,IN2P3, F-91405 Orsay, France.;Univ Lyon 1, Univ Lyon, CNRS, IN2P3,UMR5822,IPNL, 4 Rue Enrico Fermi, F-69622 Villeurbanne, France..
    Eberth, J.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Gonzalez, V
    Univ Valencia, Dept Ingn Elect, Valencia, Spain..
    Harkness-Brennan, L. J.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Hess, H.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Jungclaus, A.
    CSIC, Inst Estruct Mat, E-28006 Madrid, Spain..
    Korten, W.
    CEA, DRF, IRFU, Ctr CEA Saclay, F-91191 Gif Sur Yvette, France..
    Labiche, M.
    STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England..
    Lefevre, A.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Menegazzo, R.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Mengoni, D.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Million, B.
    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy..
    Napoli, D. R.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, Via Romea 4, I-35020 Legnaro, Italy..
    Pullia, A.
    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Quintana, B.
    Univ Salamanca, Lab Radiac Ionizantes, E-37008 Salamanca, Spain..
    Ralet, D.
    Univ Paris Saclay, Univ Paris Sud, CSNSM, CNRS,IN2P3, F-91405 Orsay, France.;Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.;Helmholtzzentrum Schwerionenforsch GmbH, GSI, D-64291 Darmstadt, Germany..
    Recchia, F.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Reiter, P.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Saillant, F.
    CNRS, GANIL, CEA, IN2P3,DRF, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France..
    Salsac, M. D.
    CEA, DRF, IRFU, Ctr CEA Saclay, F-91191 Gif Sur Yvette, France..
    Sanchis, E.
    Univ Valencia, Dept Ingn Elect, Valencia, Spain..
    Stezowski, O.
    Univ Lyon 1, Univ Lyon, CNRS, IN2P3,UMR5822,IPNL, 4 Rue Enrico Fermi, F-69622 Villeurbanne, France..
    Theisen, Ch
    CEA, DRF, IRFU, Ctr CEA Saclay, F-91191 Gif Sur Yvette, France..
    Valiente-Dobon, J. J.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, Via Romea 4, I-35020 Legnaro, Italy..
    Zielinska, M.
    CEA, DRF, IRFU, Ctr CEA Saclay, F-91191 Gif Sur Yvette, France..
    Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich(51)( 122-)(131)Sb isotopes2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 6, artikkel-id 064302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Levels fulfilling the seniority scheme and relevant isomers are commonly observed features in semimagic nuclei; for example, in Sn isotopes (Z = 50). Seniority isomers in Sn, with dominantly pure neutron configurations, directly probe the underlying neutron-neutron (vv) interaction. Furthermore, an addition of a valence proton particle or hole, through neutron-proton (v pi) interaction, affects the neutron seniority as well as the angular momentum. Purpose: Benchmark the reproducibility of the experimental observables, like the excitation energies (E-x) and the reduced electric-quadrupole transition probabilities [B(E2)], with the results obtained from shell-model interactions for neutron-rich Sn and Sb isotopes with N < 82. Study the sensitivity of the aforementioned experimental observables to the model interaction components. Furthermore, explore from a microscopic point of view the structural similarity between the isomers in Sn and Sb, and thus the importance of the valence proton. Methods: The neutron-rich Sb122-131 isotopes were produced as fission fragments in the reaction Be-9(U-238, f) with 6.2 MeV/u beam energy. A unique setup, consisting of AGATA, VAMOS++, and EXOGAM detectors, was used which enabled the prompt-delayed gamma-ray spectroscopy of fission fragments in the time range of 100 ns to 200 mu s. Results: New isomers and prompt and delayed transitions were established in the even-A Sb122-131 isotopes. In the odd-A Sb122-131 isotopes, new prompt and delayed gamma-ray transitions were identified, in addition to the confirmation of the previously known isomers. The half-lives of the isomeric states and the B(E2) transition probabilities of the observed transitions depopulating these isomers were extracted. Conclusions: The experimental data was compared with the theoretical results obtained in the framework of large-scale shell-model (LSSM) calculations in a restricted model space. Modifications of several components of the shell-model interaction were introduced to obtain a consistent agreement with the excitation energies and the B(E2) transition probabilities in neutron-rich Sn and Sb isotopes. The isomeric configurations in Sn and Sb were found to be relatively pure. Furthermore, the calculations revealed that the presence of a single valence proton, mainly in the g(7/2) orbital in Sb isotopes, leads to significant mixing (due to the v pi interaction) of (i) the neutron seniorities (upsilon(v)) and (ii) the neutron angular momentum (I-v). The above features have a weak impact on the excitation energies, but have an important impact on the B(E2) transition probabilities. In addition, a constancy of the relative excitation energies irrespective of neutron seniority and neutron number in Sn and Sb was observed.

  • 22. Cui, J. P.
    et al.
    Zhang, Y. L.
    Zhang, S.
    Wang, Y. Z.
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    alpha-decay half-lives of superheavy nuclei2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 1, artikkel-id 014316Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The alpha-decay half-lives of superheavy nuclei (SHN) with Z >= 104 are investigated by employing the effective liquid drop model (ELDM). By comparison between the calculated half-lives and the experimental ones, it is shown that the ELDM is a successful model to reproduce the experimental half-lives of SHN. Within the ELDM the alpha-decay half-lives of Z = 118-120 isotopes are predicted by inputting the alpha-decay energy (Q(alpha)) values extracted from the newest Weizsacker-Skyrme-4 (WS4) model, the finite-range droplet model (FRDM), the Kourra-Tachibaba-Uno-Yamada (KTUY) formula, and the Hartree-Fock-Bogoliubovmean field with the D1S Gogny force (GHFB). It is found that the shell effects at N = 178 and 184 are evident by analyzing the Q(alpha) values and half-lives versus the neutron number N. Because the WS4 Q(alpha) values have the smallest rms deviation, the predicted alpha-decay half-lives could be more accurate than the ones of other models, which will be helpful for future experiments.

  • 23.
    Davies, P. J.
    et al.
    Univ York, York YO10 5DD, N Yorkshire, England..
    Bäck, Torbjörn
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Zhu, Y.
    Tokyo Univ Sci, Noda, Chiba 2788510, Japan..
    Toward the limit of nuclear binding on the N = Z line: Spectroscopy of Cd-962019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 2, artikkel-id 021302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A gamma -decaying isomeric state (tau(1/2) = 197(-17)(+19) ns) has been identified in Cd-96, which is one alpha particle away from the last known bound N = Z nucleus, Sn-100. Comparison of the results with shell-model calculations has allowed a tentative experimental level scheme to be deduced and the isomer to be interpreted as a medium-spin negative-parity spin trap based on the coupling of isoscalar (T = 0) and isovector (T = 1) neutron-proton pairs. The data also suggest evidence for the population of a 9(+) T = 1 state, which is predicted by shell-model calculations to be yrast. Such a low-lying T = 1 state, which is unknown in lighter mass even-even self-conjugate nuclei, can also be interpreted in terms of the coupling of T = 0 and T = 1 neutron-proton pairs.

  • 24.
    Davies, P. J.
    et al.
    Univ York, York YO10 5DD, N Yorkshire, England.
    Park, J.
    TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada;Univ British Columbia, Vancouver, BC V6T 1Z1, Canada;Lund Univ, Dept Phys, S-22100 Lund, Sweden.
    Grawe, H.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Wadsworth, R.
    Univ York, York YO10 5DD, N Yorkshire, England.
    Gernhauser, R.
    Tech Univ Munich, D-85748 Garching, Germany.
    Krucken, R.
    TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada;Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
    Nowacki, F.
    Univ Strasbourg, F-67037 Strasbourg, France.
    Ahn, D. S.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Ameil, F.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Baba, H.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Bäck, T.
    Royal Inst Technol, SE-10691 Stockholm, Sweden.
    Blank, B.
    Ctr Etud Nucl Bordeaux Gradignan, 19 Chemin Solarium,CS 10120, F-33175 Gradignan, France.
    Blazhev, A.
    Univ Cologne, D-50937 Cologne, Germany.
    Boutachkov, P.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany;Tech Univ Darmstadt, D-64289 Darmstadt, Germany.
    Browne, F.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Univ Brighton, Brighton BN2 4GJ, E Sussex, England.
    Celikovic, I
    CEA, DSM, CNRS, IN2P3,GANIL, Blvd H Becquerel, F-14076 Caen, France;Univ Belgrade, Belgrade 11000, Serbia.
    Dewald, M.
    Univ Cologne, D-50937 Cologne, Germany.
    Doornenbal, P.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Faestermann, T.
    Tech Univ Munich, D-85748 Garching, Germany.
    Fang, Y.
    Osaka Univ, 1-1 Machikaneyama Machi, Osaka, Toyonaka 5600043, Japan.
    de France, G.
    CEA, DSM, CNRS, IN2P3,GANIL, Blvd H Becquerel, F-14076 Caen, France.
    Fukuda, N.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Gengelbach, Aila
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Gerl, J.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Giovinazzo, J.
    Ctr Etud Nucl Bordeaux Gradignan, 19 Chemin Solarium,CS 10120, F-33175 Gradignan, France.
    Go, S.
    Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan.
    Goel, N.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany;Tech Univ Darmstadt, D-64289 Darmstadt, Germany.
    Gorska, M.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Gregor, E.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany;Tech Univ Darmstadt, D-64289 Darmstadt, Germany.
    Hotaka, H.
    Tokyo Univ Sci, Dept Phys, Noda, Chiba 2788510, Japan.
    Ilieva, S.
    Tech Univ Darmstadt, D-64289 Darmstadt, Germany.
    Inabe, N.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Isobe, T.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Jenkins, D. G.
    Univ York, York YO10 5DD, N Yorkshire, England.
    Jolie, J.
    Univ Cologne, D-50937 Cologne, Germany.
    Jung, H. S.
    Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan.
    Jungclaus, A.
    CSIC, Inst Estruct Mat, E-28006 Madrid, Spain.
    Kameda, D.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Kim, G. D.
    Inst for Basic Sci Korea, Rare Isotope Sci Project, Daejeon 305811, South Korea.
    Kim, Y-K
    Inst for Basic Sci Korea, Rare Isotope Sci Project, Daejeon 305811, South Korea.
    Kojouharov, I
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Kubo, T.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Kurz, N.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Lewitowicz, M.
    CEA, DSM, CNRS, IN2P3,GANIL, Blvd H Becquerel, F-14076 Caen, France.
    Lorusso, G.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Natl Phys Lab, Acoust & Ionizing Radiat Div, Teddington TW11 0LW, Middx, England;Univ Surrey, Guildford GU2 7XH, Surrey, England.
    Lubos, D.
    Tech Univ Munich, D-85748 Garching, Germany;RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Maier, L.
    Tech Univ Munich, D-85748 Garching, Germany.
    Merchan, E.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany;Tech Univ Darmstadt, D-64289 Darmstadt, Germany.
    Moschner, K.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Univ Cologne, D-50937 Cologne, Germany.
    Murai, D.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Naqvi, F.
    Yale Univ, New Haven, CT 06511 USA.
    Nishibata, H.
    Osaka Univ, 1-1 Machikaneyama Machi, Osaka, Toyonaka 5600043, Japan.
    Nishimura, D.
    Tokyo City Univ, Setagaya Ku, Tokyo 1588557, Japan.
    Nishimura, S.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Nishizuka, I
    Tohoku Univ, Sendai, Miyagi 9800845, Japan.
    Patel, Z.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Univ Surrey, Guildford GU2 7XH, Surrey, England.
    Pietralla, N.
    Tech Univ Darmstadt, D-64289 Darmstadt, Germany.
    Rajabali, M. M.
    TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada.
    Rice, S.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Univ Surrey, Guildford GU2 7XH, Surrey, England.
    Sakurai, H.
    Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan.
    Schaffner, H.
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
    Shimizu, Y.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Sinclair, L. F.
    Univ York, York YO10 5DD, N Yorkshire, England;RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Soederstroem, P-A
    GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany;RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Steiger, K.
    Tech Univ Munich, D-85748 Garching, Germany.
    Sumikama, T.
    Tohoku Univ, Sendai, Miyagi 9800845, Japan.
    Suzuki, H.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Takeda, H.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Taprogge, J.
    CSIC, Inst Estruct Mat, E-28006 Madrid, Spain.
    Thöle, P.
    Univ Cologne, D-50937 Cologne, Germany.
    Valder, S.
    Univ York, York YO10 5DD, N Yorkshire, England.
    Wang, Z.
    TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada.
    Warr, N.
    Univ Cologne, D-50937 Cologne, Germany.
    Watanabe, H.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Beihang Univ, Beijing 100191, Peoples R China.
    Werner, V
    Tech Univ Darmstadt, D-64289 Darmstadt, Germany;Yale Univ, New Haven, CT 06511 USA.
    Wu, J.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan;Peking Univ, Beijing 100871, Peoples R China.
    Xu, Z. Y.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Yagi, A.
    Osaka Univ, Ibaraki, Osaka 5670047, Japan.
    Yoshinaga, K.
    RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan.
    Zhu, Y.
    Tokyo Univ Sci, Noda, Chiba 2788510, Japan.
    Toward the limit of nuclear binding on the N = Z line: Spectroscopy of Cd-962019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 2, artikkel-id 021302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A gamma -decaying isomeric state (tau(1/2) = 197(-17)(+19) ns) has been identified in Cd-96, which is one alpha particle away from the last known bound N = Z nucleus, Sn-100. Comparison of the results with shell-model calculations has allowed a tentative experimental level scheme to be deduced and the isomer to be interpreted as a medium-spin negative-parity spin trap based on the coupling of isoscalar (T = 0) and isovector (T = 1) neutron-proton pairs. The data also suggest evidence for the population of a 9(+) T = 1 state, which is predicted by shell-model calculations to be yrast. Such a low-lying T = 1 state, which is unknown in lighter mass even-even self-conjugate nuclei, can also be interpreted in terms of the coupling of T = 0 and T = 1 neutron-proton pairs.

  • 25.
    Doncel, Maria
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Bäck, Torbjörn
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Qi, C.
    Cullen, D. M.
    Hodge, D.
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Taylor, M. J.
    Procter, M.
    Giles, M.
    Auranen, K.
    Grahn, T.
    Greenlees, P. T.
    Jakobsson, U.
    Julin, R.
    Juutinen, S.
    Herzáň, A.
    Konki, J.
    Pakarinen, J.
    Partanen, J.
    Peura, P.
    Rahkila, P.
    Ruotsalainen, P.
    Sandzelius, M.
    Sarén, J.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Uusitalo, J.
    Spin-dependent evolution of collectivity in Te 1122017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 5, artikkel-id 051304Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The evolution of collectivity with spin along the yrast line in the neutron-deficient nucleus Te112 has been studied by measuring the reduced transition probability of excited states in the yrast band. In particular, the lifetimes of the 4+ and 6+ excited states have been determined by using the recoil distance Doppler-shift method. The results are discussed using both large-scale shell-model and total Routhian surface calculations.

  • 26.
    Doncel, Maria
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Qi, Chong
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Li, Hongjie J.
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Jakobsson, Ulrika
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Auranen, K.
    Boenig, S.
    Drummond, M. C.
    Grahn, T.
    Greenlees, P. T.
    Herzan, A.
    Joss, D. T.
    Julin, R.
    Juutinen, S.
    Konki, J.
    Kroell, T.
    Leino, M.
    McPeake, C.
    O'Donnell, D.
    Page, R. D.
    Pakarinen, J.
    Partanen, J.
    Peura, P.
    Rahkila, P.
    Ruotsalainen, P.
    Sandzelius, M.
    Saren, J.
    Saygi, B.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Taylor, M. J.
    Thornthwaite, A.
    Uusitalo, J.
    Lifetime measurements of excited states in W-162 and W-164 and the evolution of collectivity in rare-earth nuclei2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 95, nr 4, artikkel-id 044321Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Lifetimes of the first excited 2(+) states in the extremely neutron- deficient W-162 and W-164 nuclei have been measured using the recoil distance Doppler shift technique. Experimental B(E2) data for the isotopic chains of hafnium, tungsten, and osmium, from the midshell region near the beta-stability line towards the N = 82 closed shell and the most neutron-deficient nuclides, are compared with predictions of nuclear deformations and 2(1)(+) -> 0(g.s)(.+) reduced transition strengths from different classes of state-of-the-art theoretical model calculations. The results reveal striking differences and deficiencies in the predictive power of current nuclear structure models.

  • 27.
    Fäldt, Göran
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Wilkin, C.
    UCL, Phys & Astron Dept, Gower St, London WC1E 6BT, England..
    Phenomenological study of the pp -> pi(+) pn reaction2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 2, artikkel-id 025201Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Fully constrained bubble chamber data on the pp -> pi(+) pn and pp -> pi(+) d reactions are used to investigate the ratio of the counting rates for the two processes as function of the pn excitation energy Q. Though it is important to include effects associated with the p-wave nature of pion production, the data are insufficient to establish unambiguously the dependence on Q. The angular distributions show the presence of higher partial waves which seem to be anomalously large at small Q. The dispersion relation method to determine scattering lengths is extended to encompass cases where, as for the pp -> pi(+) pn reaction, there is a bound state and, in a test example, it is shown that the values deduced for the low-energy neutron-proton scattering parameters are significantly influenced by the pion p-wave behavior.

  • 28.
    Hadynska-Klek, K.
    et al.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland.;Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland.;Univ Oslo, Dept Phys, N-0316 Oslo, Norway.;INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy.;Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England..
    Napiorkowski, P. J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Zielinska, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland.;Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Srebrny, J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Maj, A.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Azaiez, F.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Dobon, J. J. Valiente
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Kicinska-Habior, M.
    Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland..
    Nowacki, F.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France..
    Naidja, H.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France.;GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.;Univ Constantine 1, LPMS, Route Ain El Bey, Constantine 25000, Algeria..
    Bounthong, B.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France..
    Rodriguez, T. R.
    Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain..
    de Angelis, G.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Abraham, T.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Kumar, G. Anil
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Bazzacco, D.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Bellato, M.
    INFN Sez Padova, I-35131 Padua, Italy..
    Bortolato, D.
    INFN Sez Padova, I-35131 Padua, Italy..
    Bednarczyk, P.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Benzoni, G.
    INFN Sez Milano, I-20133 Milan, Italy..
    Berti, L.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Birkenbach, B.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Bruyneel, B.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Brambilla, S.
    INFN Sez Milano, I-20133 Milan, Italy..
    Camera, F.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Chavas, J.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Cederwall, B.
    Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden..
    Charles, L.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France..
    Ciemala, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Cocconi, P.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Coleman-Smith, P.
    Daresbury Lab, Warrington WA4 4AD, Cheshire, England..
    Colombo, A.
    INFN Sez Padova, I-35131 Padua, Italy..
    Corsi, A.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Crespi, F. C. L.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Cullen, D. M.
    Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England..
    Czermak, A.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Desesquelles, P.
    Univ Paris 11, F-91400 Orsay, France.;CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Doherty, D. T.
    Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.;Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France.;Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England..
    Dulny, B.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Eberth, J.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Farnea, E.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Fornal, B.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Franchoo, S.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Gadea, A.
    Univ Valencia, CSIC, Inst Fis Corpuscular IFIC, S-46980 Valencia, Spain..
    Giaz, A.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Gottardo, A.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Grave, X.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Grebosz, J.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Gorgen, A.
    Univ Oslo, Dept Phys, N-0316 Oslo, Norway..
    Gulmini, M.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Habermann, T.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany..
    Hess, H.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Isocrate, R.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Iwanicki, J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Jaworski, G.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Judson, D. S.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Jungclaus, A.
    CSIC, Inst Estruct Mat, E-28006 Madrid, Spain..
    Karkour, N.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Kmiecik, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Karpinski, D.
    Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland..
    Kisielinski, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Kondratyev, N.
    Flerov Lab Nucl React JINR, RU-141980 Dubna, Russia..
    Korichi, A.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Komorowska, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland.;Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland..
    Kowalczyk, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Korten, W.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Krzysiek, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland.;Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, Magurele 077125, Romania..
    Lehaut, G.
    Univ Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France..
    Leoni, S.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Ljungvall, J.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Lopez-Martens, A.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Lunardi, S.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Maron, G.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Mazurek, K.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Menegazzo, R.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Mengoni, D.
    INFN Sez Padova, I-35131 Padua, Italy..
    Merchan, E.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.;Tech Univ Darmstadt, D-64289 Darmstadt, Germany..
    Meczynski, W.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Michelagnoli, C.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Million, B.
    INFN Sez Milano, I-20133 Milan, Italy..
    Myalski, S.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Napoli, D. R.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Niikura, M.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Obertelli, A.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Ozmen, S. F.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Palacz, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Prochniak, L.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Pullia, A.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Quintana, B.
    Univ Salamanca, Dept Fis Fundamental, Lab Radiac Ionizantes, Salamanca, Spain..
    Rampazzo, G.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Recchia, F.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Redon, N.
    Univ Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France..
    Reiter, P.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Rosso, D.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Rusek, K.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Sahin, E.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Salsac, M-D
    Söderström, Pär-Anders
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Stefan, I.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Stezowski, O.
    Univ Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France..
    Styczen, J.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Theisen, Ch.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Toniolo, N.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Ur, C. A.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Wadsworth, R.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England..
    Wasilewska, B.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Wiens, A.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Wood, J. L.
    Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA..
    Wrzosek-Lipska, K.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Zieblinski, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Quadrupole collectivity in Ca-42 from low-energy Coulomb excitation with AGATA2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 2, artikkel-id 024326Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ACoulomb-excitation experiment to study electromagnetic properties of Ca-42 was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. gamma rays from excited states in Ca-42 were measured with the AGATA spectrometer. The magnitudes and relative signs of ten E2 matrix elements coupling six low-lying states in Ca-42, including the diagonal E2 matrix elements of 2(1)(+) and 2(2)(+) states, were determined using the least-squares code GOSIA. The obtained set of reduced E2 matrix elements was analyzed using the quadrupole sum rule method and yielded overall quadrupole deformation for 0(1),(+)(2) and 2(1,2)(+) states, as well as triaxiality for 0(1,2)(+) states, establishing the coexistence of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca-42. The experimental results were compared with the state-of-the-art large-scale shell-model and beyond-mean-field calculations, which reproduce well the general picture of shape coexistence in Ca-42.

  • 29.
    Hadynska-Klek, K.
    et al.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland.;Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland.;Univ Oslo, Dept Phys, N-0316 Oslo, Norway.;INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy.;Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England..
    Napiorkowski, P. J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Zielinska, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland.;Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Srebrny, J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Maj, A.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Azaiez, F.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Dobon, J. J. Valiente
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Kicinska-Habior, M.
    Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland..
    Nowacki, F.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France..
    Naidja, H.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France.;GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.;Univ Constantine 1, LPMS, Route Ain El Bey, Constantine 25000, Algeria..
    Bounthong, B.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France..
    Rodriguez, T. R.
    Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain..
    de Angelis, G.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Abraham, T.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Kumar, G. Anil
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Bazzacco, D.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Bellato, M.
    INFN Sez Padova, I-35131 Padua, Italy..
    Bortolato, D.
    INFN Sez Padova, I-35131 Padua, Italy..
    Bednarczyk, P.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Benzoni, G.
    INFN Sez Milano, I-20133 Milan, Italy..
    Berti, L.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Birkenbach, B.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Bruyneel, B.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Brambilla, S.
    INFN Sez Milano, I-20133 Milan, Italy..
    Camera, F.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Chavas, J.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik. Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden..
    Charles, L.
    Univ Strasbourg, IPHC, CNRS, UMR7178, 23 Rue Loess, F-67037 Strasbourg, France..
    Ciemala, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Cocconi, P.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Coleman-Smith, P.
    Daresbury Lab, Warrington WA4 4AD, Cheshire, England..
    Colombo, A.
    INFN Sez Padova, I-35131 Padua, Italy..
    Corsi, A.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Crespi, F. C. L.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Cullen, D. M.
    Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England..
    Czermak, A.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Desesquelles, P.
    Univ Paris 11, F-91400 Orsay, France.;CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Doherty, D. T.
    Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.;Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France.;Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England..
    Dulny, B.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Eberth, J.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Farnea, E.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Fornal, B.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Franchoo, S.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Gadea, A.
    Univ Valencia, CSIC, Inst Fis Corpuscular IFIC, S-46980 Valencia, Spain..
    Giaz, A.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Gottardo, A.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Grave, X.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Grebosz, J.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Gorgen, A.
    Univ Oslo, Dept Phys, N-0316 Oslo, Norway..
    Gulmini, M.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Habermann, T.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany..
    Hess, H.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Isocrate, R.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Iwanicki, J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Jaworski, G.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Judson, D. S.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Jungclaus, A.
    CSIC, Inst Estruct Mat, E-28006 Madrid, Spain..
    Karkour, N.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Kmiecik, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Karpinski, D.
    Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland..
    Kisielinski, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Kondratyev, N.
    Flerov Lab Nucl React JINR, RU-141980 Dubna, Russia..
    Korichi, A.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Komorowska, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland.;Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland..
    Kowalczyk, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Korten, W.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Krzysiek, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland.;Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, Magurele 077125, Romania..
    Lehaut, G.
    Univ Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France..
    Leoni, S.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Ljungvall, J.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Lopez-Martens, A.
    CNRS, CSNSM, IN2P3, F-91405 Orsay, France..
    Lunardi, S.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Maron, G.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Mazurek, K.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Menegazzo, R.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Mengoni, D.
    INFN Sez Padova, I-35131 Padua, Italy..
    Merchan, E.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.;Tech Univ Darmstadt, D-64289 Darmstadt, Germany..
    Meczynski, W.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Michelagnoli, C.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Million, B.
    INFN Sez Milano, I-20133 Milan, Italy..
    Myalski, S.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Napoli, D. R.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Niikura, M.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Obertelli, A.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Ozmen, S. F.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Palacz, M.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Prochniak, L.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Pullia, A.
    INFN Sez Milano, I-20133 Milan, Italy.;Univ Milan, Dipartimento Fis, I-20133 Milan, Italy..
    Quintana, B.
    Univ Salamanca, Dept Fis Fundamental, Lab Radiac Ionizantes, Salamanca, Spain..
    Rampazzo, G.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Recchia, F.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Redon, N.
    Univ Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France..
    Reiter, P.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Rosso, D.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Rusek, K.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Sahin, E.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Salsac, M-D
    Soderstrom, P-A
    Stefan, I.
    Inst Phys Nucl Orsay, F-91400 Orsay, France..
    Stezowski, O.
    Univ Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France..
    Styczen, J.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Theisen, Ch.
    Univ Paris Saclay, CEA, Irfu, F-91191 Gif Sur Yvette, France..
    Toniolo, N.
    INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy..
    Ur, C. A.
    INFN Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy..
    Wadsworth, R.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England..
    Wasilewska, B.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Wiens, A.
    Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany..
    Wood, J. L.
    Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA..
    Wrzosek-Lipska, K.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5A, PL-02093 Warsaw, Poland..
    Zieblinski, M.
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
    Quadrupole collectivity in Ca-42 from low-energy Coulomb excitation with AGATA2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 2, artikkel-id 024326Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ACoulomb-excitation experiment to study electromagnetic properties of Ca-42 was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. gamma rays from excited states in Ca-42 were measured with the AGATA spectrometer. The magnitudes and relative signs of ten E2 matrix elements coupling six low-lying states in Ca-42, including the diagonal E2 matrix elements of 2(1)(+) and 2(2)(+) states, were determined using the least-squares code GOSIA. The obtained set of reduced E2 matrix elements was analyzed using the quadrupole sum rule method and yielded overall quadrupole deformation for 0(1),(+)(2) and 2(1,2)(+) states, as well as triaxiality for 0(1,2)(+) states, establishing the coexistence of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca-42. The experimental results were compared with the state-of-the-art large-scale shell-model and beyond-mean-field calculations, which reproduce well the general picture of shape coexistence in Ca-42.

  • 30.
    Haefner, G.
    et al.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany;Univ Paris Saclay, CNRS IN2P3, CSNSM, Orsay Campus, F-91405 Orsay, France.
    Moschner, K.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
    Blazhev, A.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
    Boutachkov, P.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Davies, P. J.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
    Wadsworth, R.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
    Ameil, F.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Baba, H.
    RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
    Back, T.
    KTH Stockholm, Dept Phys, SE-10044 Stockholm, Sweden.
    Dewald, M.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
    Doornenbal, P.
    RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
    Faestermann, T.
    Tech Univ Munich, Phys Dept, D-80333 Munich, Germany.
    Gengelbach, Aila
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Gerl, J.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Gernhaeuser, R.
    Tech Univ Munich, Phys Dept, D-80333 Munich, Germany.
    Go, S.
    Univ Tokyo, Dept Phys, Tokyo 1138654, Japan.
    Gorska, M.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Grawe, H.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Gregor, E.
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
    Hotaka, H.
    Tokyo Univ Sci, Dept Phys, Chiba 2788510, Japan.
    Isobe, T.
    RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
    Jenkins, D. G.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
    Jolie, J.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
    Jung, H. S.
    Chung Ang Univ, Dept Phys, Seoul 156756, South Korea.
    Kojouharov, I
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Kurz, N.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Lewitowicz, M.
    CEA DSM CNRS IN2P3, GANIL, F-14076 Caen, France.
    Lorusso, G.
    RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
    Lozeva, R.
    Univ Paris Saclay, CNRS IN2P3, CSNSM, Orsay Campus, F-91405 Orsay, France.
    Merchan, E.
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
    Naqvi, F.
    Yale Univ, Dept Phys, New Haven, CT 06520 USA;Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
    Nishibata, H.
    Osaka Univ, Dept Phys, Osaka 5600043, Japan.
    Nishimura, D.
    Tokyo City Univ, Dept Phys, Tokyo 1588557, Japan.
    Nishimura, S.
    RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
    Pietralla, N.
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
    Schaffner, H.
    GSI Helmholtzzentrum Schwerionenforsch GmbH, D-62491 Darmstadt, Germany.
    Soderstrom, P-A
    RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
    Steiger, K.
    Tech Univ Munich, Phys Dept, D-80333 Munich, Germany.
    Sumikama, T.
    Tohoku Univ, Fac Sci, Dept Phys, Sendai, Miyagi 9808578, Japan.
    Taprogge, J.
    CSIC Madrid, Inst Struct Matter, ES-28006 Madrid, Spain;Univ Autonoma Madrid, ES-28049 Madrid, Spain.
    Thoele, P.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
    Watanbe, H.
    Beihang Univ, Dept Phys, Beijing 100083, Peoples R China.
    Warr, N.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
    Werner, V
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany;Yale Univ, Dept Phys, New Haven, CT 06520 USA;Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
    Xu, Z. Y.
    Univ Tokyo, Dept Phys, Tokyo 1138654, Japan.
    Yagi, A.
    Osaka Univ, Dept Phys, Osaka 5600043, Japan.
    Yoshinaga, K.
    Tokyo Univ Sci, Dept Phys, Chiba 2788510, Japan.
    Zhu, Y.
    Tokyo Univ Sci, Dept Phys, Chiba 2788510, Japan.
    Properties of gamma-decaying isomers in the Sn-100 region populated in fragmentation of a Xe-124 beam2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 2, artikkel-id 024302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A systematic study was performed of microsecond gamma-decaying isomers around Sn-100 produced in a fragmentation reaction of a Xe-124 beam at 345 MeV/u at the Radioactive Ion Beam Factory of the RIKEN Nishina Center in Saitama, Japan. Half-lives of isomeric states in that region were remeasured allowing us to improve the currently available experimental information. Reduced transition probabilities were deduced and compared to shell-model calculations in various model spaces. The recently reported low-energy transitions in Rh-92 and Ag-96 were remeasured with improved precision. Additionally, experimental information on isomeric ratios, including five new ones, were extracted and compared to a previous experimental study and the sharp cutoff model of fragmentation reaction.

  • 31. Herzan, A.
    et al.
    Juutinen, S.
    Auranen, K.
    Grahn, T.
    Greenlees, P. T.
    Hauschild, K.
    Jakobsson, Ulrika
    KTH, Skolan för teknikvetenskap (SCI), Fysik. University of Jyväskylä, Finland.
    Julin, R.
    Ketelhut, S.
    Leino, M.
    Lopez-Martens, A.
    Lonnroth, T.
    Nieminen, P.
    Nyman, M.
    Partanen, J.
    Peura, P.
    Rahkila, P.
    Ruotsalainen, P.
    Sandzelius, M.
    Saren, J.
    Scholey, C.
    Slotte, J. M. K.
    Sorri, J.
    Stolze, S.
    Uusitalo, J.
    Detailed spectroscopy of Bi-1952017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 1, artikkel-id 014301Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    An experiment focused on the study of shape coexistence and new high-spin structures in Bi-195 has been performed. The nucleus is in a transitional region of the bismuth isotope chain. A large number of new states have been found, resulting in a significant extension of the previously known level scheme. Several new collective structures have been identified. A strongly coupled rotational band built upon the 13/2(+) isomeric state was extended up to I-pi = (49/2(+)) and an energy of 5706 keV. The I-pi = 31/2(+) member of the pi i(13/2) band was also found to feed a new long-lived isomeric state with an excitation energy of 2616 keV and a spin and parity of I-pi = 29/2(+). The half-life of the 29/2+ isomeric state was determined to be 1.49(1) mu s. It decays via the emission of 457-keV E2 and 236-keV E1 transitions, respectively. A low-energy 46-keV E2 transition has been identified to depopulate the (29/(2-)) isomeric state, with a measured half-life of T-1/2 = 614(5) ns. This transition allows the excitation energy of the isomeric state to be determined as 2381 keV. The feeding patterns of both 29/2(+) and (29/2(-)) isomeric states have also been described. This is the first time collective structures have also been observed up to high spins and excitation energies in the neutron-deficient Bi-195 nucleus. Evidence for the manifestation of shape coexistence in Bi-195 is also discussed.

  • 32. Häfner, G.
    et al.
    Moschner, K.
    Blazhev, A.
    Boutachkov, P.
    Davies, P. J.
    Wadsworth, R.
    Ameil, F.
    Baba, H.
    Bäck, Torbjörn
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Dewald, M.
    Doornenbal, P.
    Faestermann, T.
    Gengelbach, A.
    Gerl, J.
    Gernhaüser, R.
    Go, S.
    Górska, M.
    Grawe, H.
    Gregor, E.
    Hotaka, H.
    Isobe, T.
    Jenkins, D. G.
    Jolie, J.
    Jung, H. S.
    Kojouharov, I.
    Kurz, N.
    Lewitowicz, M.
    Lorusso, G.
    Lozeva, R.
    Merchan, E.
    Naqvi, F.
    Nishibata, H.
    Nishimura, D.
    Nishimura, S.
    Pietralla, N.
    Schaffner, H.
    Söderström, P. -A
    Steiger, K.
    Sumikama, T.
    Taprogge, J.
    Thöle, P.
    Watanbe, H.
    Warr, N.
    Werner, V.
    Xu, Z. Y.
    Yagi, A.
    Yoshinaga, K.
    Zhu, Y.
    Properties of γ-decaying isomers in the Sn 100 region populated in fragmentation of a Xe 124 beam2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 2, artikkel-id 024302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A systematic study was performed of microsecond γ-decaying isomers around Sn100 produced in a fragmentation reaction of a Xe124 beam at 345 MeV/u at the Radioactive Ion Beam Factory of the RIKEN Nishina Center in Saitama, Japan. Half-lives of isomeric states in that region were remeasured allowing us to improve the currently available experimental information. Reduced transition probabilities were deduced and compared to shell-model calculations in various model spaces. The recently reported low-energy transitions in Rh92 and Ag96 were remeasured with improved precision. Additionally, experimental information on isomeric ratios, including five new ones, were extracted and compared to a previous experimental study and the sharp cutoff model of fragmentation reaction.

  • 33.
    John, P. R.
    et al.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany..
    Valiente-Dobon, J. J.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Mengoni, D.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Modamio, V.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.;Univ Oslo, Dept Phys, POB 1048 Blindern, N-0316 Oslo, Norway..
    Lunardi, S.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Bazzacco, D.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Gadea, A.
    Univ Valencia, CSIC, Inst Fis Corpuscular, E-46980 Valencia, Spain..
    Wheldon, C.
    Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England..
    Rodriguez, T. R.
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.;Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain..
    Alexander, T.
    Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England..
    de Angelis, G.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Ashwood, N.
    Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England..
    Barr, M.
    Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England..
    Benzoni, G.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
    Birkenbach, B.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Bizzeti, P. G.
    Univ Firenze, Dipartimento Fis, I-50019 Florence, Italy.;Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy..
    Bizzeti-Sona, A. M.
    Univ Firenze, Dipartimento Fis, I-50019 Florence, Italy.;Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy..
    Bottoni, S.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.;Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA..
    Bowry, M.
    Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England..
    Bracco, A.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
    Browne, F.
    Univ Brighton, Sch Comp Engn & Math, Brighton BN2 4GJ, E Sussex, England..
    Bunce, M.
    Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England..
    Camera, F.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
    Corradi, L.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Crespi, F. C. L.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
    Melon, B.
    Univ Firenze, Dipartimento Fis, I-50019 Florence, Italy.;Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy..
    Farnea, E.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Fioretto, E.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Gottardo, A.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.;IN2P3, CNRS, CSNSM, Orsay Campus, F-91405 Orsay, France.;Univ Paris 11, Orsay Campus, F-91405 Orsay, France..
    Grente, L.
    Ctr CEA Saclay, CEA, DSM, Inst Rech Lois Fondament Univers IRFU, F-91191 Gif Sur Yvette, France..
    Hess, H.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Kokalova, Tz.
    Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England..
    Korten, W.
    Ctr CEA Saclay, CEA, DSM, Inst Rech Lois Fondament Univers IRFU, F-91191 Gif Sur Yvette, France..
    Kusoglu, A.
    Istanbul Univ, Fac Sci, Dept Phys, TR-34134 Istanbul, Turkey.;Horia Hulubei Natl Inst Phys & Nucl Engn, ELI, NP, Magurele 077125, Romania..
    Lenzi, S.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Leoni, S.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
    Ljungvall, J.
    IN2P3, CNRS, CSNSM, Orsay Campus, F-91405 Orsay, France.;Univ Paris 11, Orsay Campus, F-91405 Orsay, France..
    Menegazzo, R.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Michelagnoli, C.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;CEA, DSM, CNRS, IN2P3,GANIL, F-14076 Caen, France..
    Mijatovic, T.
    Inst Ruder Boskovic, HR-10000 Zagreb, Croatia..
    Montagnoli, G.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Montanari, D.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Strasbourg, USIAS, IPHC, CNRS, F-67037 Strasbourg 2, France..
    Napoli, D. R.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Podolyak, Zs.
    Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England..
    Pollarolo, G.
    Univ Torino, Dipartimento Fis Teor, I-10125 Turin, Italy.;Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy..
    Recchia, F.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Reiter, P.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Roberts, O. J.
    Univ Brighton, Sch Comp Engn & Math, Brighton BN2 4GJ, E Sussex, England.;Univ York, York YO10 5DD, N Yorkshire, England..
    Sahin, E.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.;Univ Oslo, Dept Phys, POB 1048 Blindern, N-0316 Oslo, Norway..
    Salsac, M. -D
    Scarlassara, F.
    Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.;Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Sferrazza, M.
    Univ Libre Bruxelles, Dept Phys, B-1050 Brussels, Belgium..
    Soderstrom, Pär-Anders
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Kärnfysik.
    Stefanini, A. M.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Szilner, S.
    IN2P3, CNRS, CSNSM, Orsay Campus, F-91405 Orsay, France.;Univ Paris 11, Orsay Campus, F-91405 Orsay, France..
    Ur, C. A.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Extreme Light Infrastruct Nucl Phys Facil, MG-6, Bucharest, Romania..
    Vogt, A.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Walshe, J.
    Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England..
    In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 95, nr 6, artikkel-id 064321Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The neutron-rich nucleus Pt-200 is investigated via in-beam gamma-ray spectroscopy to study the shape evolution in the neutron-rich platinum isotopes towards the N = 126 shell closure. The two-neutron transfer reaction Pt-198(Se-82, Se-80)Pt-200 is used to populate excited states of Pt-200. The Advanced Gamma Ray Tracking Array (AGATA) demonstrator coupled with the PRISMA spectrometer detects gamma rays coincident with the Se-80 recoils, the binary partner of Pt-200. The binary partner method is applied to extract the gamma-ray transitions and build the level scheme of Pt-200. The level at 1884 keV reported by Yates et al. [S. W. Yates, E. M. Baum, E. A. Henry, L. G. Mann, N. Roy, A. Aprahamian, R. A. Meyer, and R. Estep, Phys. Rev. C 37, 1889 (1988)] was confirmed to be at 1882.1 keV and assigned as the (6(1)(+)) state. An additional gamma ray was found and it presumably deexcites the (8(1)(+)) state. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even Pt190-204 isotopes, revealing that Pt-200 marks the transition from the gamma-unstable behavior of lighter Pt nuclei towards a more spherical one when approaching the N = 126 shell closure.

  • 34. Kobyakov, D. N.
    et al.
    Pethick, C. J.
    KTH, Centra, Nordic Institute for Theoretical Physics NORDITA.
    Reddy, S.
    Schwenk, A.
    Dispersion and decay of collective modes in neutron star cores2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 2, artikkel-id 025805Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We calculate the frequencies of collective modes of neutrons, protons, and electrons in the outer core of neutron stars. The neutrons and protons are treated in a hydrodynamic approximation and the electrons are regarded as collisionless. The coupling of the nucleons to the electrons leads to Landau damping of the collective modes and to significant dispersion of the low-lying modes. We investigate the sensitivity of the mode frequencies to the strength of entrainment between neutrons and protons, which is not well characterized. The contribution of collective modes to the thermal conductivity is evaluated.

  • 35. Kobyakov, D. N.
    et al.
    Pethick, Christopher J.
    Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita). University of Copenhagen, Denmark.
    Reddy, S.
    Schwenk, A.
    Dispersion and decay of collective modes in neutron star cores2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 2, artikkel-id 025805Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We calculate the frequencies of collective modes of neutrons, protons, and electrons in the outer core of neutron stars. The neutrons and protons are treated in a hydrodynamic approximation and the electrons are regarded as collisionless. The coupling of the nucleons to the electrons leads to Landau damping of the collective modes and to significant dispersion of the low-lying modes. We investigate the sensitivity of the mode frequencies to the strength of entrainment between neutrons and protons, which is not well characterized. The contribution of collective modes to the thermal conductivity is evaluated.

  • 36.
    Lewis, M. C.
    et al.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Parr, E.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Page, R. D.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    McPeake, C.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Joss, D. T.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Ali, F. A.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Univ Sulaimani, Coll Educ, Dept Phys, POB 334, Sulaimani, Kurdistan Regio, Iraq.;Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada..
    Auranen, K.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.;Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA..
    Briscoe, A. D.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Capponi, L.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland..
    Grahn, T.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Greenlees, P. T.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Henderson, J.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.;Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA..
    Herzan, A.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Slovak Acad Sci, Inst Phys, SK-84511 Bratislava, Slovakia..
    Jakobsson, U.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Julin, R.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Juutinen, S.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Konki, J.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.;CERN, CH-1211 Geneva 23, Switzerland..
    Labiche, M.
    STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England..
    Leino, M.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Mason, P. J. R.
    STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England..
    Nyman, M.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.;IRMM, Retieseweg 111, B-2440 Geel, Belgium..
    O'Donnell, D.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland..
    Pakarinen, J.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Papadakis, P.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Partanen, J.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Peura, P.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.;Univ Helsinki, Helsinki Inst Phys, FI-00014 Helsinki, Finland..
    Rahkila, P.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Revill, J. P.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Ruotsalainen, P.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Sandzelius, M.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Saren, J.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Saygi, B.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Ege Univ, Fen Fak, Fizik Bolumu, TR-35100 Izmir, Turkey..
    Scholey, C.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Simpson, J.
    STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England..
    Smith, J. F.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland..
    Smolen, M.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland..
    Sorri, J.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Stolze, S.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.;Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA..
    Thornthwaite, A.
    Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Uusitalo, J.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland..
    Decay of a 19(-) isomeric state in Lu-1562018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 2, artikkel-id 024302Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A multiparticle spin-trap isomeric state having a half-life of 179(4) ns and lying 2601 keV above the yrast 10(+) state in Lu-156 has been discovered. The Lu-156 nuclei were produced by bombarding isotopically enriched Cd-106 targets with beams of Ni-58 ions, separated in flight using the gas-filled separator RITU and their decays were measured using the GREAT spectrometer. Analysis of the main decay path that populates yrast states observed previously suggests a spin-parity assignment of 19(-) for the isomeric state, which is consistent with isomeric states identified in the N = 85 isotones. Comparison with other decay paths in Lu-156 indicates that the [pi h(11/)(2)(-1) circle times nu h(9/2)]10(+) state at the bottom of the yrast sequence is likely to be the a-decaying isomeric state, with the [pi h(11/)(2)(-1) circle times nu f(7/2)]9(+) state lying 62 keV above it. The relative ordering of the lowest-lying 9(+) and 10(+) states is inverted in Lu-156 compared with its odd-odd isotones.

  • 37.
    Litzinger, J.
    et al.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Blazhev, A.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Dewald, A.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Didierjean, F.
    Univ Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France..
    Duchene, G.
    Univ Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France..
    Fransen, C.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Lozeva, R.
    Univ Paris Saclay, CSNSM, CNRS IN2P3, Orsay Campus, FR-91405 Orsay, France..
    Verney, D.
    CNRS IN2P3, Inst Phys Nucl, F-91405 Orsay, France.;Univ Paris 11, F-91405 Orsay, France..
    de Angelis, G.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Bazzacco, D.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Birkenbach, B.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Bottoni, S.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Bracco, A.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Braunroth, T.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Corradi, L.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Crespi, F. C. L.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Desesquelles, P.
    Ctr Spectrometrie Nucl & Spectrometrie Masse CSNS, CNRS IN2P3, Orsay Campus, F-91405 Orsay, France.;Univ Paris 11, Orsay Campus, F-91405 Orsay, France..
    Eberth, J.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Ellinger, E.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Farnea, E.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Fioretto, E.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Gernhaeuser, R.
    Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany..
    Goasduff, A.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Gorgen, A.
    Ctr CEA Saclay, Inst Rech Fondamentales Univers IRFU, CEA DSM, F-91191 Gif Sur Yvette, France.;Univ Oslo, Dept Phys, POB 1048 Blindern, N-0316 Oslo, Norway..
    Gottardo, A.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Grebosz, J.
    Polish Acad Sci, Henry Niewodniczatiski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Hackstein, M.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Hess, H.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Ibrahim, F.
    CNRS IN2P3, Inst Phys Nucl, F-91405 Orsay, France.;Univ Paris 11, F-91405 Orsay, France..
    Jolie, J.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Jungclaus, A.
    CSIC, Inst Estruct Mat, Serrano 119, E-28006 Madrid, Spain..
    Kolos, K.
    CNRS IN2P3, Inst Phys Nucl, F-91405 Orsay, France.;Univ Paris 11, F-91405 Orsay, France..
    Korten, W.
    Ctr CEA Saclay, Inst Rech Fondamentales Univers IRFU, CEA DSM, F-91191 Gif Sur Yvette, France..
    Leoni, S.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Lunardi, S.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Maj, A.
    Menegazzo, R.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy..
    Mengoni, D.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy.;Univ West Scotland, Nucl Phys Res Grp, High St, Paisley PA1 2BE, Renfrew, Scotland..
    Michelagnoli, C.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;GANIL, CEA DSM CNRS IN2P3, BP 55027, F-14076 Caen 5, France..
    Mijatovic, T.
    Ruder Bakovie Inst, HR-10002 Zagreb, Croatia..
    Million, B.
    Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
    Moeller, O.
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany..
    Modamio, V.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Montagnoli, G.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Montanari, D.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Morales, A. I.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Napoli, D. R.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Niikura, M.
    CNRS IN2P3, Inst Phys Nucl, F-91405 Orsay, France.;Univ Paris 11, F-91405 Orsay, France..
    Pietralla, N.
    Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany..
    Pollarolo, G.
    Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy.;Ist Nazl Fis Nucl, I-10125 Turin, Italy..
    Pullia, A.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Quintana, B.
    Univ Salamanca, Lab Radiaciones Ionizantes, E-37008 Salamanca, Spain..
    Recchia, F.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Reiter, P.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Rosso, D.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Sahin, E.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Salsac, M. D.
    Ctr CEA Saclay, Inst Rech Fondamentales Univers IRFU, CEA DSM, F-91191 Gif Sur Yvette, France..
    Scarlassara, F.
    Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, I-35131 Padua, Italy..
    Soderstroem, P. -A
    Stefanini, A. M.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Stezowski, O.
    Univ Lyon, Univ Lyon 1, IN2P3 CNRS, F-69622 Villeurbanne, France..
    Szilner, S.
    Ruder Bakovie Inst, HR-10002 Zagreb, Croatia..
    Theisen, Ch.
    Ctr CEA Saclay, Inst Rech Fondamentales Univers IRFU, CEA DSM, F-91191 Gif Sur Yvette, France..
    Valiente-Dobon, J. J.
    Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy..
    Vandone, V.
    Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy..
    Vogt, A.
    Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany..
    Transition probabilities in neutron-rich Se-80,Se-82 and the role of the nu g(9/2) orbital2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 4, artikkel-id 044323Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Transition probabilities of intermediate-spin yrast and non-yrast excitations in Se-80,Se-82 were investigated in a recoil distance Doppler-shift (RDDS) experiment performed at the Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro. The Cologne Plunger device for deep inelastic scattering was used for the RDDS technique and was combined with the AGATA Demonstrator array for the gamma-ray detection and coupled to the PRISMA magnetic spectrometer for an event-by-event particle identification. In Se-80, the level lifetimes of the yrast (6(1)(+)) and (8(1)(+)) states and of a non-yrast band feeding the yrast 4(1)(+) state are determined. A spin and parity assignment of the head of this sideband is discussed based on the experimental results and supported by large-scale shell-model calculations. In Se-82, the level lifetimes of the yrast 6(1)(+) state and the yrare 4(2)(+) state and lifetime limits of the yrast (10(1)(+)) state and of the 5(1)(-) state are determined. Although the experimental results contain large uncertainties, they are interpreted with care in terms of large-scale shell-model calculations using the effective interactions JUN45 and jj44b. The excited states' wave functions are investigated and discussed with respect to the role of the neutron g(9/2) orbital.

  • 38. Lv, B. F.
    et al.
    Petrache, C. M.
    Astier, A.
    Dupont, E.
    Lopez-Martens, A.
    Greenlees, P. T.
    Badran, H.
    Calverley, T.
    Cox, D. M.
    Grahn, T.
    Hilton, J.
    Julin, R.
    Juutinen, S.
    Konki, J.
    Leino, M.
    Pakarinen, J.
    Papadakis, P.
    Partanen, J.
    Rahkila, P.
    Sandzelius, M.
    Saren, J.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Uusitalo, J.
    Herzán, A.
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Ertoprak, Aysegul
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Liu, H.
    Guo, S.
    Liu, M. L.
    Qiang, Y. H.
    Wang, J. G.
    Zhou, X. H.
    Kuti, I.
    Timár, J.
    Tucholski, A.
    Srebrny, J.
    Andreoiu, C.
    Evolution from γ -soft to stable triaxiality in Nd 136 as a prerequisite of chirality2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 4, artikkel-id 044304Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The level structure of Nd136 has been investigated using the Mo100(Ar40,4n) reaction and the JUROGAM II+RITU+GREAT setup. The level scheme has been extended significantly. Many new bands have been identified both at low and high spin, among which are five nearly degenerate bands interpreted as chiral partners. Excitation energies, spins, and parities of the previously known bands are revised and firmly established, and some previously known bands have been revised. Configurations are assigned to the observed bands based on cranked Nilsson-Strutinsky calculations. The band structure of Nd136 is now clarified and the various types of single-particle and collective excitations are well understood.

  • 39.
    Lv, B. F.
    et al.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France.;Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Petrache, C. M.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Chen, Q. B.
    Tech Univ Munich, Phys Dept, D-85747 Garching, Germany..
    Meng, J.
    Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.;Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan..
    Astier, A.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Dupon, E.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Greenlees, P.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Badran, H.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Calverley, T.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Cox, D. M.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;Lund Inst Technol, Dept Math Phys, S-22362 Lund, Sweden..
    Grahn, T.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Hilton, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Julin, R.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Juutinen, S.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Konki, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;CERN, CH-1211 Geneva 23, Switzerland..
    Pakarinen, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Papadakis, P.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Partanen, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Rahkila, P.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Ruotsalainen, P.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Sandzelius, M.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Saren, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Scholey, C.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Sorri, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;Univ Oulu, Sodankyla Geophys Observ, FIN-99600 Sodankyla, Finland..
    Stolze, S.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland.;Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA..
    Uusitalo, J.
    Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland..
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Ertoprak, Aysegul
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Liu, Haipeng
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Guo, S.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Liu, M. L.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Wang, J. G.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Zhou, X. H.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Kuti, I
    Hungarian Acad Sci, Inst Nucl Res, Pf 51, H-4001 Debrecen, Hungary..
    Timar, J.
    Hungarian Acad Sci, Inst Nucl Res, Pf 51, H-4001 Debrecen, Hungary..
    Tucholski, A.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5a, PL-02093 Warsaw, Poland..
    Srebrny, J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5a, PL-02093 Warsaw, Poland..
    Andreoiu, C.
    Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada..
    Chirality of Nd-135 reexamined: Evidence for multiple chiral doublet bands2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 2, artikkel-id 024314Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    One new pair of positive-parity chiral doublet bands have been identified in the odd-A nucleus Nd-135 which together with the previously reported negative-parity chiral doublet bands constitute a third case of multiple chiral doublet (M chi D) bands in the A approximate to 130 mass region. The properties of the M chi D bands are well reproduced by constrained covariant density functional theory and particle rotor model calculations. The newly observed M chi D bands in Nd-135 represents an important milestone in supporting the existence of M chi D in nuclei.

  • 40.
    Parr, E.
    et al.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Page, R. D.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Joss, D. T.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Ali, F. A.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Univ Sulaimani, Coll Educ, Dept Phys, POB 334, Sulaimani, Kurdistan Regio, Iraq.;Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada..
    Auranen, K.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA..
    Capponi, L.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland.;Scottish Univ Phys Alliance, Glasgow G12 8QQ, Lanark, Scotland.;Horia Hulubei Natl Inst Res Phys & Nucl Engn, ELI NP, Bucharest, Romania..
    Grahn, T.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Greenlees, P. T.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Henderson, J.
    Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.;Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA..
    Herzan, A.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Slovak Acad Sci, Inst Phys, SK-84511 Bratislava, Slovakia..
    Jakobsson, Ulrika
    KTH, Skolan för teknikvetenskap (SCI), Fysik. Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.
    Julin, R.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Juutinen, S.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Konki, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;CERN, CH-1211 Geneva 23, Switzerland..
    Labiche, M.
    STFC Daresbury Lab, Nucl Phys Grp, Warrington WA4 4AD, Cheshire, England..
    Leino, M.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Mason, P. J. R.
    STFC Daresbury Lab, Nucl Phys Grp, Warrington WA4 4AD, Cheshire, England..
    McPeake, C.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    O'Donnell, D.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland..
    Pakarinen, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Papadakis, P.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.;Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Partanen, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Peura, P.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Rahkila, P.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Revill, J. P.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Ruotsalainen, P.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Sandzelius, M.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Saren, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Scholey, C.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Simpson, J.
    STFC Daresbury Lab, Nucl Phys Grp, Warrington WA4 4AD, Cheshire, England..
    Smith, J. F.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland.;Scottish Univ Phys Alliance, Glasgow G12 8QQ, Lanark, Scotland..
    Smolen, M.
    Univ West Scotland, Sch Engn & Comp, Paisley PA1 2BE, Renfrew, Scotland.;Scottish Univ Phys Alliance, Glasgow G12 8QQ, Lanark, Scotland..
    Sorri, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Stolze, S.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA..
    Thornthwaite, A.
    Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Uusitalo, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-1562018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 2, artikkel-id 024321Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Fine structure in the a decay of high-spin isomers in Lu-155( 25/2(-)) and Hf-156(8(+))has been studied for the first time using alpha gamma- coincidence analysis. Three new a decays from Lu-155(25/2(-)) and two from Hf-156(8(+)) have been identified, populating seniority s > 1 states in the N = 82 nuclei Tm-151 and Yb-152, respectively. The reduced hindrance factors of the a decays support the previous configuration assignments of the populated states. This is the first observation of states with excitation energy greater than 1.5 MeV being populated following a decay in nuclei outside of the Pb-208 region.

  • 41.
    Petrache, C. M.
    et al.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Frauendorf, S.
    Univ Notre Dame, Dept Phys, Indianapolis, IN 46557 USA..
    Lv, B. F.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Astier, A.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Dupont, E.
    Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Matiere, Batiment 104-108, F-91405 Orsay, France..
    Guo, S.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Liu, M. L.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Zhou, X. H.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Wang, K. L.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China..
    Greenlees, P. T.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Badran, H.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Cox, D. M.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Lund Inst Technol, Dept Math Phys, S-22362 Lund, Sweden..
    Grahn, T.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Julin, R.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Juutinen, S.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Konki, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;CERN, CH-1211 Geneva 23, Switzerland..
    Pakarinen, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Papadakis, P.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England..
    Partanen, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Rahkila, P.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Sandzelius, M.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Saren, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Scholey, C.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Sorri, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Univ Oulu, Sodankyla Geophys Observ, FIN-99600 Sodankyla, Finland..
    Stolze, S.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.;Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA..
    Uusitalo, J.
    Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland..
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Aktas, Özge
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Ertoprak, Aysegül
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Liu, Huan
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnenergiteknik.
    Kuti, I
    Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary..
    Timar, J.
    Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary..
    Tucholski, A.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5a, PL-02093 Warsaw, Poland..
    Srebrny, J.
    Univ Warsaw, Heavy Ion Lab, Pasteura 5a, PL-02093 Warsaw, Poland..
    Andreoiu, C.
    Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada..
    Collective rotation of an oblate nucleus at very high spin2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 4, artikkel-id 041301Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A sequence of nine almost equidistant quadrupole transitions is observed in Nd-137. The sequence represents an extremely regular rotational band that extends to a spin of about 75/2 and an excitation energy of approximate to 4.5 MeV above yrast. Cranked mean-field calculations of the Nilsson-Strutinsky type suggest an oblate shape for the band. They reproduce the observed I(I +1) dependence of the rotational energy whereas predicting a pronounced decrease in the deformation, which is the hallmark of antimagnetic rotation.

  • 42. Petrache, C. M.
    et al.
    Lv, B. F.
    Astier, A.
    Dupont, E.
    Wang, Y. K.
    Zhang, S. Q.
    Zhao, P. W.
    Ren, Z. X.
    Meng, J.
    Greenlees, P. T.
    Badran, H.
    Cox, D. M.
    Grahn, T.
    Julin, R.
    Juutinen, S.
    Konki, J.
    Pakarinen, J.
    Papadakis, P.
    Partanen, J.
    Rahkila, P.
    Sandzelius, M.
    Saren, J.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Uusitalo, J.
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Aktas, O.
    Ertoprak, A.
    Liu, H.
    Matta, S.
    Subramaniam, P.
    Guo, S.
    Liu, M. L.
    Zhou, X. H.
    Wang, K. L.
    Kuti, I.
    Timár, J.
    Tucholski, A.
    Srebrny, J.
    Andreoiu, C.
    Evidence of chiral bands in even-even nuclei2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, nr 4, artikkel-id 041304Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Evidence for chiral doublet bands has been observed for the first time in the even-even nucleus Nd136. One chiral band was firmly established. Four other candidates for chiral bands were also identified, which can contribute to the realization of the multiple pairs of chiral doublet bands (MχD) phenomenon. The observed bands are investigated by the constrained and tilted axis cranking covariant density functional theory (TAC-CDFT). Possible configurations have been explored. The experimental energy spectra, angular momenta, and B(M1)/B(E2) values for the assigned configurations are globally reproduced by TAC-CDFT. Calculated results support the chiral interpretation of the observed bands, which correspond to shapes with maximum triaxiality induced by different multiquasiparticle configurations in Nd136.

  • 43.
    Psaltis, A.
    et al.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece;McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
    Khaliel, A.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece.
    Asimakopoulou, Eleni M.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik. Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece.
    Kanellakopoulos, A.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece;Katholieke Univ Leuven, Inst Kern Stralingsfys, Celestijnenlaan 200D, B-3001 Leuven, Belgium.
    Lagald, V
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece;CERN, Geneva, Switzerland.
    Lykiardopoulou, M.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece;Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada.
    Malami, E.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece;Nikhef, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands.
    Tsavalas, P.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece;NCSR Demokritos, INRASTES, GR-15310 Aghia Paraskevi, Greece.
    Zyriliou, A.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece.
    Mertzimekis, T. J.
    Univ Athens, Dept Phys, Zografou Campus, GR-15784 Athens, Greece.
    Cross-section measurements of radiative proton-capture reactions in Cd-112 at energies of astrophysical interest2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 6, artikkel-id 065807Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Reactions involving the group of nuclei commonly known as p nuclei are part of the nucleosynthetic mechanisms at astrophysical sites. The In-113 nucleus is such a case with several open questions regarding its origin at extreme stellar environments. In this paper, the experimental study of the cross sections of the radiative proton-capture reaction Cd-112(p, gamma)In-113 is attempted for the first time at energies lying inside the Gamow window with an isotopically enriched Cd-112 target. Two different techniques, the in-beam gamma-ray spectroscopy and the activation method, have been applied. The latter method is required to account for the presence of a low-lying In-113 isomer at 392 keV having a half-life of approximate to 100 min. From the cross sections, the astrophysical S factors and the isomeric ratios have been additionally deduced. The experimental results are compared to detailed Hauser-Feshbach theoretical calculations using TALYS and discussed in terms of their significance to the optical model potential involved.

  • 44.
    Qian, Yibin
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Fysik. Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China..
    Qi, Chong
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Partial seniority conservation and solvability of single- j systems2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 6, artikkel-id 061303Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The seniority symmetry is known to be partially conserved in two special cases in the (9/2)(4) system, which can lead to striking features in the corresponding structure and electromagnetic transition properties. However, it is still quite difficult to derive those kind of solvable states, in general, especially towards higher- j orbits. We have developed a novel and effective way to confront this challenge by starting from the m scheme and making use of the angular momentum projection method. It also allows us to explore another special family of seniority conserving states in the midshell besides the specific case of the (9/2)(4) configuration. Moreover, we have studied systemically all states in single- j systems up to j = 15/2 and derived the analytic expressions for the eigenvalues of all solvable states with a focus on those in j = 9/2 and j = 11/2. Such studies can also be useful for the experimental search of relevant states and for the understanding of their electromagnetic transition properties.

  • 45.
    Qiang, Y. H.
    et al.
    Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China.;Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China.;Grad Univ Chinese Acad Sci, Beijing 000049, Peoples R China..
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik. KTH, Dept Phys, S-10691 Stockholm, Sweden..
    Xu, F. R.
    Peking Univ, Dept Tech Phys, Beijing 100871, Peoples R China..
    Identification of high-K rotation in Ba-130: Testing the consistency of electromagnetic observables2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 99, nr 1, artikkel-id 014307Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The band built on the K-pi = 8(-), T-1/2 = 9.4 ms isomer of( 130)Ba has been identified, filling the gap in the systematics of the dipole bands built on the 8(- )isomers in the N = 74 isotones from( 128)Xe to Gd-138. The use of the GALILEO array in conjunction with its ancillaries EUCLIDES and Neutron Wall, helped to firmly place the newly identified transitions on top of the long-lived isomer. The extracted g(K)and g(R) gyromagnetic factors are in agreement with the 7/2(+)[404] circle times 9/2(-)[514] two-neutron Nilsson configuration. Particle-rotor model calculations give an understanding of the limited degree of K mixing. The experimental information on the K-pi = 8(-) isomer of Ba-130 is now the most complete among the K isomers of the N = 74 isotones.

  • 46.
    Rakopoulos, Vasileios
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    Lantz, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    Solders, Andreas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    Al-Adili, Ali
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    Mattera, Andrea
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    Canete, L.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Eronen, T.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Gorelov, D.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Jokinen, A.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Kankainen, A.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Kolhinen, V. S.
    Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA;Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Moore, I. D.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Nesterenko, D. A.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Penttila, H.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Pohjalainen, I.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Rinta-Antila, S.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Simutkin, Vasily
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    Vilen, M.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Voss, A.
    Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
    Pomp, Stephan
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
    First isomeric yield ratio measurements by direct ion counting and implications for the angular momentum of the primary fission fragments2018Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 98, nr 2, artikkel-id 024612Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We report the first experimental determination of independent isomeric yield ratios using direct ion counting with a Penning trap, which offered such a high resolution in mass that isomeric states could be separated. The measurements were performed at the Ion Guide Isotope Separator On-Line (IGISOL) facility at the University of Jyvaskyla. The isomer production ratios of Ge-81, Y-96,Y-97 Sn-128(,1)30, and Sb-129 in the 25-MeV proton-induced fission of U-na(t) and Th-232 were studied. Three isomeric pairs (Ge-81, Y-96, and Sb-129) were measured for the first time for the U-na(t)(p, f) reaction, while all the reported yield ratios for the Th-232(p, f) reaction were determined for the first time. The comparison of the experimentally determined isomeric yield ratios with data available in the literature shows a reasonable agreement, except for the case of Sn-130 for unspecified reasons. The obtained results were also compared with the GEF model, where good agreement can be noticed in most cases for both reactions. Serious discrepancies can only be observed for the cases of Y-96(,)97 for both reactions. Moreover, based on the isomeric yield ratios, the root-mean-square angular momenta (J(r)(ms)) of the fission fragments after scission were estimated using the TALYS code. The experimentally determined isomeric yield ratios, and consequently the deduced J(rms), for Sn-130 are significantly lower compared to Sn-128 for both fissioning systems. This can be attributed to the more spherical shape of the fragments that contribute to the formation of Sn-130, due to their proximity to the N = 82 shell closure. The values of J(rms) for Sb-129 are higher than Sn-128 for both reactions, despite the same neutron number of both nuclides (N = 78), indicating the odd-Z effect where fission fragments with odd-Z number tend to bear larger angular momentum than even-Z fragments. The isomer production ratio for the isotopes of Sn is more enhanced in the U-na(t)(p, f) reaction than in Th-232(p, f). The opposite is observed for Y-96 and Y-97. These discrepancies might be associated to different scission shapes of the fragments for the two fission reactions, indicating the impact that the different fission modes can have on the isomeric yield ratios.

  • 47. Ralet, D
    et al.
    Bäck, Torbjörn
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Doncel, Maria
    KTH.
    Ghazi Moradi, Farnaz
    KTH.
    Zielinska, M.
    et al.,
    Lifetime measurement of neutron-rich even-even molybdenum isotopes2017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 95, nr 3, artikkel-id 034320Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: In the neutron-rich A approximate to 100 mass region, rapid shape changes as a function of nucleon number as well as coexistence of prolate, oblate, and triaxial shapes are predicted by various theoretical models. Lifetime measurements of excited levels in the molybdenum isotopes allow the determination of transitional quadrupole moments, which in turn provides structural information regarding the predicted shape change. Purpose: The present paper reports on the experimental setup, the method that allowed one to measure the lifetimes of excited states in even-even molybdenum isotopes from mass A = 100 up to mass A = 108, and the results that were obtained. Method: The isotopes of interest were populated by secondary knock-out reaction of neutron-rich nuclei separated and identified by the GSI fragment separator at relativistic beam energies and detected by the sensitive PreSPEC-AGATA experimental setup. The latter included the Lund-York-Cologne calorimeter for identification, tracking, and velocity measurement of ejectiles, and AGATA, an array of position sensitive segmented HPGe detectors, used to determine the interaction positions of the gamma ray enabling a precise Doppler correction. The lifetimes were determined with a relativistic version of the Doppler-shift-attenuation method using the systematic shift of the energy after Doppler correction of a gamma-ray transition with a known energy. This relativistic Doppler-shift-attenuation method allowed the determination of mean lifetimes from 2 to 250 ps. Results: Even-even molybdenum isotopes from mass A = 100 to A = 108 were studied. The decays of the low-lying states in the ground-state band were observed. In particular, two mean lifetimes were measured for the first time: tau = 29.7(-9.1)(+11.3) ps for the 4(+) state of Mo-108 and tau = 3.2(-0.7)(+ 0.7) ps for the 6(+) state of Mo-102. Conclusions: The reduced transition strengths B(E2), calculated from lifetimes measured in this experiment, compared to beyond-mean-field calculations, indicate a gradual shape transition in the chain of molybdenum isotopes when going from A = 100 to A = 108 with a maximum reached at N = 64. The transition probabilities decrease for Mo-108 which may be related to its well-pronounced triaxial shape indicated by the calculations.

  • 48. Saygi, B.
    et al.
    Joss, D. T.
    Page, R. D.
    Grahn, T.
    Simpson, J.
    O'Donnell, D.
    Alharshan, G.
    Auranen, K.
    Bäck, Torbjörn
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Boening, S.
    Braunroth, T.
    Carroll, R. J.
    Cederwall, Bo
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.
    Cullen, D. M.
    Dewald, A.
    Doncel, M.
    Donosa, L.
    Drummond, M. C.
    Ertugral, F.
    Erturk, S.
    Fransen, C.
    Greenlees, P. T.
    Hackstein, M.
    Hauschild, K.
    Herzan, A.
    Jakobsson, U
    KTH.
    Jones, P. M.
    Julin, R.
    Juutinen, S.
    Konki, J.
    Kroell, T.
    Labiche, M.
    Lopez-Martens, A.
    McPeake, C. G.
    Moradi, F.
    Moeller, O.
    Mustafa, M.
    Nieminen, P.
    Pakarinen, J.
    Partanen, J.
    Peura, P.
    Procter, M.
    Rahkila, P.
    Rother, W.
    Ruotsalainen, P.
    Sandzelius, M.
    Saren, J.
    Scholey, C.
    Sorri, J.
    Stolze, S.
    Taylor, M. J.
    Thornthwaite, A.
    Uusitalo, J.
    Reduced transition probabilities along the yrast line in W-1662017Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, nr 2, artikkel-id 021301Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Lifetimes of excited states in the yrast band of the neutron-deficient nuclide W-166 have been measured utilizing the DPUNS plunger device at the target position of the JUROGAM II gamma-ray spectrometer in conjunction with the RITU gas-filled separator and the GREAT focal-plane spectrometer. Excited states in W-166 were populated in the Mo-92(Kr-78, 4p) reaction at a bombarding energy of 380 MeV. The measurements reveal a low value for the ratio of reduced transitions probabilities for the lowest-lying transitions B(E2; 4(+)-> 2(+)) / B(E2; 2(+)-> 0(+)) = 0.33(5), compared with the expected ratio for an axially deformed rotor (B-4/2 = 1.43).

  • 49.
    Schneider, Andre S.
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC). California Institute of Technology, USA.
    Constantinou, C.
    Muccioli, B.
    Prakash, M.
    Akmal-Pandharipande-Ravenhall equation of state for simulations of supernovae, neutron stars, and binary mergers2019Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 100, nr 2, artikkel-id 025803Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Differences in the equation of state (EOS) of dense matter translate into differences in astrophysical simulations and their multimessenger signatures. Thus, extending the number of EOSs for astrophysical simulations allows us to probe the effect of different aspects of the EOS in astrophysical phenomena. In this work, we construct the EOS of hot and dense matter based on the Akmal, Pandharipande, and Ravenhall (APR) model and thereby extend the open-source SROEOS code which computes EOSs of hot dense matter for Skyrme-type parametrizations of the nuclear forces. Unlike Skrme-type models, in which parameters of the interaction are fit to reproduce the energy density of nuclear matter and/or properties of heavy nuclei, the EOS of APR is obtained from potentials resulting from fits to nucleon-nucleon scattering and properties of light nuclei. In addition, this EOS features a phase transition to a spin-isospin ordered state of nucleons, termed a neutral pion condensate, at supranuclear densities. We show that differences in the effective masses between EOSs have consequences for the properties of nuclei in the subnuclear inhomogeneous phase of matter. We also test the new EOS of APR in spherically symmetric core-collapse of massive stars with 15 M-circle dot and 40 M-circle dot, respectively. We find that the phase transition in the EOS of APR speeds up the collapse of the star. However, this phase transition does not generate a second shock wave or another neutrino burst as reported for the hadron-to-quark phase transition. The reason for this difference is that the width of the coexistence region and the latent heat in the EOS of APR are substantially smaller than in the quark-to-hadron transition employed earlier, which results in a significantly smaller softening of the high density EOS.

  • 50. Toppi, M.
    et al.
    Abou-Haidar, Z.
    Agodi, C.
    Alvarez, M. A. G.
    Aumann, T.
    Balestra, F.
    Battistoni, G.
    Bocci, A.
    Böhlen, T. T.
    Boudard, A.
    Brunetti, A.
    Carpinelli, M.
    Cirio, R.
    Cirrone, G. A. P.
    Cortes-Giraldo, M. A.
    Cuttone, G.
    De Napoli, M.
    Durante, M.
    Fernández-García, J. P.
    Finck, Ch.
    Golosio, B.
    Iarocci, E.
    Iazzi, F.
    Ickert, G.
    Introzzi, R.
    Juliani, D.
    Krimmer, J.
    Kummali, A. H.
    Kurz, N.
    Labalme, M.
    Leifels, Y.
    Le Fevre, A.
    Leray, S.
    Marchetto, F.
    Monaco, V.
    Morone, M. C.
    Nicolosi, D.
    Oliva, P.
    Paoloni, A.
    Piersanti, L.
    Pleskac, R.
    Randazzo, N.
    Rescigno, R.
    Romano, F.
    Rossi, D.
    Rosso, V.
    Rousseau, M.
    Sacchi, R.
    Sala, P.
    Salvador, S.
    Sarti, A.
    Scheidenberger, C.
    Schuy, C.
    Sciubba, A.
    Sfienti, Concettina
    Stockholms universitet, Naturvetenskapliga fakulteten, Medicinsk strålningsfysik (tills m KI). Laboratori Nazionali del Sud, Italy.
    Simon, H.
    Sipala, V.
    Spiriti, E.
    Tropea, S.
    Vanstalle, M.
    Younis, H.
    Patera, V.
    Measurement of fragmentation cross sections of C-12 ions on a thin gold target with the FIRST apparatus2016Inngår i: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 93, nr 6, artikkel-id 064601Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A detailed knowledge of the light ions interaction processes with matter is of great interest in basic and applied physics. As an example, particle therapy and space radioprotection require highly accurate fragmentation cross-section measurements to develop shielding materials and estimate acute and late health risks for manned missions in space and for treatment planning in particle therapy. The Fragmentation of Ions Relevant for Space and Therapy experiment at the Helmholtz Center for Heavy Ion research (GSI) was designed and built by an international collaboration from France, Germany, Italy, and Spain for studying the collisions of a C-12 ion beam with thin targets. The collaboration's main purpose is to provide the double-differential cross-section measurement of carbon-ion fragmentation at energies that are relevant for both tumor therapy and space radiation protection applications. Fragmentation cross sections of light ions impinging on a wide range of thin targets are also essential to validate the nuclear models implemented in MC simulations that, in such an energy range, fail to reproduce the data with the required accuracy. This paper presents the single differential carbon-ion fragmentation cross sections on a thin gold target, measured as a function of the fragment angle and kinetic energy in the forward angular region (theta less than or similar to 6 degrees), aiming to provide useful data for the benchmarking of the simulation softwares used in light ions fragmentation applications. The C-12 ions used in the measurement were accelerated at the energy of 400 MeV/nucleon by the SIS (heavy ion synchrotron) GSI facility.

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