Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Applications of Soft X-Ray Spectroscopy
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Soft X-Ray Physics.
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Soft X-ray emission spectroscopy is an old experimental technique that has seen a strong revival since the advent of new high brilliance soft X-ray sources in the shape of synchrotrons.  This thesis covers a range of applications where soft x-ray techniques have been applied. I have looked at fluorescence yield from doubly excited helium in field free conditions as well as in the presence of weak electric and magnetic fields. Using soft X-ray emission spectroscopy (SXES) I have explored scattering mechanisms in molecular systems. Quenching of symmetry breaking transitions by detuning of the excitation energy was observed in CO2. Bond-length dependence was seen for symmetry breaking transitions in a series of hydrocarbons. Dissociation dynamics was explored in OCS and HCl. I have also applied SXES to liquid water exploring the properties of hydrogen bonding.  Buried layers of AlAs under 100 Å GaAs(100) was studied and thickness dependence and interface effects observed. The technique was also used to study the electronic structure of yttrium and vanadium hydrides. dd-excitations and accompanying spin flip excitations was observed in Cu M resonant x-ray Raman emission from Sr2CuO2Cl2.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis , 2011. , 61 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 860
National Category
Atom and Molecular Physics and Optics Condensed Matter Physics
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-159369ISBN: 978-91-554-8173-5 (print)OAI: oai:DiVA.org:uu-159369DiVA: diva2:444570
Public defence
2011-11-11, Å4001, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:00 (English)
Opponent
Supervisors
Available from: 2011-10-21 Created: 2011-09-29 Last updated: 2011-11-04Bibliographically approved
List of papers
1. Influence of the Radiative Decay on the Cross Section for Double Excitations in Helium
Open this publication in new window or tab >>Influence of the Radiative Decay on the Cross Section for Double Excitations in Helium
Show others...
1999 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 83, no 5, 947-950 p.Article in journal (Refereed) Published
Abstract [en]

The fluorescence yield spectrum of the double excitations in helium has been measured. All three Rydberg series converging to the N = 2 threshold are resolved, and the intensity of the individual lines is determined. The intensity variation through each series indicates that the radiative decay channel cannot be neglected when discussing the double excitations in helium. This calls for a revision of the interpretation of the absorption spectrum, and sets the limit for using the ion yield method to monitor the absorption probability.

Keyword
excited-states, high-resolution, threshold, lifetime, He+
National Category
Natural Sciences
Identifiers
urn:nbn:se:uu:diva-66856 (URN)10.1103/PhysRevLett.83.947 (DOI)
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-11-28Bibliographically approved
2. Radiative and Relativistic Effects in the Decay of Highly Excited States in Helium
Open this publication in new window or tab >>Radiative and Relativistic Effects in the Decay of Highly Excited States in Helium
Show others...
2000 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 85, no 6, 1202-1205 p.Article in journal (Refereed) Published
Abstract [en]

A recent experimental study [J.-E. Rubensson et al., Phys. Rev. Lett. 83, 947 (1999)] measured a significant fluorescence yield of the He( 2lnl) photoexcited resonances, showing major qualitative differences from nonrelativistic predictions. We present a further theoretical study of these states, and perform R-matrix multichannel quantum defect theory calculations to extract fluorescence and ionization cross sections. These theoretical results are in excellent agreement with newer, higher-resolution measurements. Radiative and spin-orbit effects are quantified and shown to play an important role in the overall characterization of highly excited states.

National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-94516 (URN)10.1103/PhysRevLett.85.1202 (DOI)
Available from: 2006-05-05 Created: 2006-05-05 Last updated: 2017-12-14Bibliographically approved
3. Double Excitations of Helium in Weak Static Electric Fields
Open this publication in new window or tab >>Double Excitations of Helium in Weak Static Electric Fields
Show others...
2006 In: Physical Review Letters, ISSN 0031-9007, Vol. 96, 043002- p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-95805 (URN)
Available from: 2007-04-24 Created: 2007-04-24 Last updated: 2016-04-26Bibliographically approved
4. Magnetic-field induced enhancement in the fluorescence yield spectrum of doubly excited states in helium
Open this publication in new window or tab >>Magnetic-field induced enhancement in the fluorescence yield spectrum of doubly excited states in helium
Show others...
2006 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 97, no 25, 253002- p.Article in journal (Refereed) Published
Abstract [en]

An influence of static magnetic fields on the fluorescence yield spectrum of He in the vicinity of the N=2 thresholds has been observed. The experimental results are in excellent agreement with predictions based on multichannel quantum defect theory, and it is demonstrated that the Rydberg electron ℓ mixing due to the diamagnetic interaction is essential for the description of the observed fluorescence yield intensity enhancement.

National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-95806 (URN)10.1103/PhysRevLett.97.253002 (DOI)000243414600018 ()
Available from: 2007-04-24 Created: 2007-04-24 Last updated: 2017-12-14
5. Quenching of symmetry breaking in resonant inelastic X-ray scattering by detuned excitation
Open this publication in new window or tab >>Quenching of symmetry breaking in resonant inelastic X-ray scattering by detuned excitation
Show others...
1996 (English)In: PHYSICAL REVIEW LETTERS, ISSN 0031-9007, Vol. 77, no 25, 5035-5038 p.Article in journal (Other scientific) Published
Abstract [en]

Observations made in oxygen K emission of CO2 show that the symmetry selective character of resonant x-ray emission is excitation energy dependent. Electronically dipole forbidden O K emission lines are observed for excitation at the O 1s --> pi* resonanc

Place, publisher, year, edition, pages
AMER INST PHYSICS, 1996
Keyword
BAND-STRUCTURE; EMISSION; FLUORESCENCE; LOCALIZATION; CK
Identifiers
urn:nbn:se:uu:diva-74059 (URN)
Note
Addresses: Skytt P, UNIV UPPSALA, DEPT PHYS, BOX 530, S-75121 UPPSALA, SWEDEN. UNIV NEVADA, DEPT CHEM, LAS VEGAS, NV 89154. LINKOPING UNIV, INST PHYS & MEASUREMENT TECHNOL, S-58183 LINKOPING, SWEDEN.Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-11-04
6. Bond-length-dependent core hole localization observed in simple hydrocarbons
Open this publication in new window or tab >>Bond-length-dependent core hole localization observed in simple hydrocarbons
Show others...
1999 (English)In: PHYSICAL REVIEW LETTERS, ISSN 0031-9007, Vol. 83, no 7, 1315-1318 p.Article in journal (Other scientific) Published
Abstract [en]

Soft x-ray-emission spectroscopy is applied to measure the amount of dynamic symmetry breaking in core-excited acetylene, ethylene, and ethane. Large variations are observed between the molecules and are rationalized in terms of the different C-C bond len

Place, publisher, year, edition, pages
AMERICAN PHYSICAL SOC, 1999
Keyword
X-RAY-EMISSION; K-SHELL EXCITATION; PHOTOELECTRON-SPECTRA; SYMMETRY-BREAKING; HIGH-RESOLUTION; VIBRATIONAL STRUCTURE; SPECTROSCOPY; SCATTERING; IONIZATION; ETHENE
Identifiers
urn:nbn:se:uu:diva-66755 (URN)
Note
Addresses: Gunnelin K, Univ Uppsala, Dept Phys, Box 530, S-75121 Uppsala, Sweden. Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden. Mid Sweden Univ, Dept Phys & Math, S-85170 Sundsvall, Sweden. Linkoping Univ, Inst Phys & Measurement Technol, S-58183 LinkAvailable from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-11-04
7. Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering
Open this publication in new window or tab >>Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering
Show others...
1999 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 59, no 6, 4281-4287 p.Article in journal (Refereed) Published
Abstract [en]

We show evidence of dissociation during resonant inelastic soft x-ray scattering. Carbon and oxygen K-shell and sulfur L-shell resonant and nonresonant x-ray emission spectra were measured using monochromatic synchrotron radiation for excitation and ionization. After sulfur L2,3→π*, σ* excitation, atomic lines are observed in the emission spectra as a consequence of competition between de-excitation and dissociation. In contrast the carbon and oxygen spectra show weaker line-shape variations and no atomic lines. The spectra are compared to results from ab initio calculations. The discussion of the dissociation paths is based on calculated potential energy surfaces and atomic transition energies.

Keyword
HIGH-RESOLUTION; OCS MOLECULE; ABSORPTION SPECTRA; STATIC EXCHANGE; AUGER-SPECTRA; AB-INITIO; EMISSION; CS2; DYNAMICS; HCL
National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-67148 (URN)10.1103/PhysRevA.59.4281 (DOI)
Available from: 2006-11-08 Created: 2006-11-08 Last updated: 2017-11-28Bibliographically approved
8. Resonant L-II,L-III x-ray Raman scattering from HCl
Open this publication in new window or tab >>Resonant L-II,L-III x-ray Raman scattering from HCl
Show others...
2006 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 74, no 6, 062512- p.Article in journal (Refereed) Published
Abstract [en]

We have studied the spectral features of Cl L-II,L-III resonant x-ray Raman scattering of HCl molecules in gas phase both experimentally and theoretically. The theory, formulated in the intermediate-coupling scheme, takes into account the spin-orbital and molecular-field splittings in the Cl 2p shells, as well as the Coulomb interaction of the core hole with unoccupied molecular orbitals. Experiment and theory display nondispersive dissociative peaks formed by decay transitions in both molecular and dissociative regions. The molecular and atomic peaks collapse in a single narrow resonance because the dissociative potentials of core-excited and final states are parallel to each other along the whole pathway of the nuclear wave packet.

National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-146649 (URN)10.1103/PhysRevA.74.062512 (DOI)000243166700063 ()
Available from: 2011-02-21 Created: 2011-02-18 Last updated: 2017-12-11Bibliographically approved
9. X-Ray Emission Spectroscopy of Hydrogen Bonding and Electronic Structure of Liquid Water
Open this publication in new window or tab >>X-Ray Emission Spectroscopy of Hydrogen Bonding and Electronic Structure of Liquid Water
Show others...
2002 In: Physical Review Letters, ISSN 0031-9007, Vol. 89, no 13, 137402- p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-92079 (URN)
Available from: 2004-09-17 Created: 2004-09-17 Last updated: 2011-11-04Bibliographically approved
10. Local structures of liquid water studied by x-ray emission spectroscopy
Open this publication in new window or tab >>Local structures of liquid water studied by x-ray emission spectroscopy
Show others...
2004 In: Physical Review B (Condensed Matter and Materials Physics -1(II)), ISSN 1098-0121, Vol. 69, 024201- p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-92080 (URN)
Available from: 2004-09-17 Created: 2004-09-17 Last updated: 2011-11-04Bibliographically approved
11. Direct observation of interface effects of thin AlAs(100) layers buried in GaAs
Open this publication in new window or tab >>Direct observation of interface effects of thin AlAs(100) layers buried in GaAs
Show others...
2000 (English)In: APPLIED SURFACE SCIENCE, ISSN 0169-4332, Vol. 166, no 1-4, 309-312 p.Article in journal (Refereed) Published
Abstract [en]

A study of the electronic structure of ultrathin AlAs layers buried in GaAs(100) and their interfaces is presented. Al L-2,L-3 soft-X-ray-emission (SXE) spectra from the AlAs layers were measured. The spectra show distinct thickness-dependent features, wh

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV, 2000
Keyword
interface; AlAs; soft X-ray emission; synchrotron radiation; X-RAY EMISSION
Identifiers
urn:nbn:se:uu:diva-36883 (URN)
Note
Addresses: Agui A, JAERI, SPring 8, Sayo, Hyogo 6795143, Japan. JAERI, SPring 8, Sayo, Hyogo 6795143, Japan. Univ Uppsala, Dept Phys, SE-75121 Uppsala, Sweden. Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden. Hogskolan I Skovde, Dept Nat SciAvailable from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-11-04
12. Theoretical investigation of the thickness dependence of soft-x-ray emission from thin AlAs(100) layers buried in GaAs
Open this publication in new window or tab >>Theoretical investigation of the thickness dependence of soft-x-ray emission from thin AlAs(100) layers buried in GaAs
Show others...
2000 (English)In: PHYSICAL REVIEW B, ISSN 1098-0121, Vol. 61, no 8, 5540-5545 p.Article in journal (Refereed) Published
Abstract [en]

Ultrathin AlAs(100) layers of 1-, 2-, and 5-ML thickness buried in GaAs are investigated by nb initio calculations. Unique experimental soft-x-ray emission spectra are explained in terms of interface effects and changes with layer thickness are found in t

Place, publisher, year, edition, pages
AMERICAN PHYSICAL SOC, 2000
Keyword
NORM-CONSERVING PSEUDOPOTENTIALS; BAND OFFSETS; GAAS/ALAS SUPERLATTICES; ELECTRONIC-STRUCTURE; GROUND-STATE; MODEL; HETEROJUNCTIONS; SURFACES; DENSITY
Identifiers
urn:nbn:se:uu:diva-37035 (URN)
Note
Addresses: Mankefors S, Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden. Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden. Hogskolan Skovde, Dept Nat Sci, S-54128 Skovde, Sweden. Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden.Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-11-04
13. Hydrogen-induced changes of the electronic states in ultrathin single-crystal vanadium layers
Open this publication in new window or tab >>Hydrogen-induced changes of the electronic states in ultrathin single-crystal vanadium layers
Show others...
1997 (English)In: PHYSICAL REVIEW B-CONDENSED MATTER, ISSN 0163-1829, Vol. 55, no 19, 12914-12917 p.Article in journal (Other scientific) Published
Abstract [en]

The electronic structure of vanadium in an Fe/V (001) superlattice, exposed to a 100 torr hydrogen pressure, was investigated using soft-x-ray emission spectroscopy and first-principles band-structure calculations. We present x-ray emission spectra from t

Place, publisher, year, edition, pages
AMER INST PHYSICS, 1997
Keyword
BAND
Identifiers
urn:nbn:se:uu:diva-73213 (URN)
Note
Addresses: UNIV UPPSALA, DEPT PHYS, S-75121 UPPSALA, SWEDEN.Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-11-04
14. Probing the local electronic structure in the H induced metal-insulator transition of Y
Open this publication in new window or tab >>Probing the local electronic structure in the H induced metal-insulator transition of Y
Show others...
1999 (English)In: JOURNAL OF PHYSICS-CONDENSED MATTER, Vol. 11, L119- p.Article in journal (Refereed) Published
Abstract [en]

The occupied acid unoccupied valence band states of yttrium (Y) metal, Y dihydride and Y trihydride were measured by soft x-ray emission and absorption spectroscopy. The experiments were complemented by first principles calculations. Both experiments and

Keyword
SWITCHABLE OPTICAL-PROPERTIES; THEORETICAL PREDICTION; YH3; SPECTROSCOPY; YTTRIUM; EXCITATIONS
Identifiers
urn:nbn:se:uu:diva-67425 (URN)
Note
Addresses: Hjorvarsson B, Royal Inst Technol, Dept Phys Mat, S-10044 Stockholm, Sweden. Royal Inst Technol, Dept Phys Mat, S-10044 Stockholm, Sweden. Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden. Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England.Available from: 2006-11-08 Created: 2006-11-08 Last updated: 2011-11-04
15. Resonant X-ray Raman spectra of Cu dd excitations in Sr2CUO2Cl2
Open this publication in new window or tab >>Resonant X-ray Raman spectra of Cu dd excitations in Sr2CUO2Cl2
Show others...
1998 (English)In: PHYSICAL REVIEW LETTERS, ISSN 0031-9007, Vol. 80, no 23, 5204-5207 p.Article in journal (Other scientific) Published
Abstract [en]

We present resonant x-ray Raman scattering results on Sr2CuO2Cl2, a model compound for high-T-c superconductors. We demonstrate that the dd excitations can be observed and show that the polarization dependence can be used to identify the dd excitations. W

Place, publisher, year, edition, pages
AMERICAN PHYSICAL SOC, 1998
Keyword
LAMELLAR COPPER OXIDES; FLUORESCENCE SPECTROSCOPY; OPTICAL-ABSORPTION; EMISSION SPECTRA; LA2CUO4
Identifiers
urn:nbn:se:uu:diva-71151 (URN)
Note
Addresses: Kuiper P, Halmstad Univ Coll, ITN, Box 823, S-30118 Halmstad, Sweden. Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden. Univ Groningen, Ctr Mat Sci, Solid State Phys Lab, NL-9747 AG Groningen, Netherlands.Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-11-04

Open Access in DiVA

fulltext(2386 kB)1376 downloads
File information
File name FULLTEXT01.pdfFile size 2386 kBChecksum SHA-512
192b1e02cbd372a1e0d91164686cdc8aef3e050fdc92821a5c6948e3c5f4210368c7fafe9390ba97b1ec41b46412d40b383caaf3a9c40e22a00024dc7fb935e4
Type fulltextMimetype application/pdf
Buy this publication >>

Search in DiVA

By author/editor
Såthe, Conny
By organisation
Soft X-Ray Physics
Atom and Molecular Physics and OpticsCondensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 1376 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 1572 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf