Measurement of the 176Yb⁢(𝑛,𝛾) cross section at the n_TOF facility at CERN

García-Infantes, F.; Praena, J.; Casanovas-Hoste, A.; Henkelmann, R.; Köster, U.; Aberle, O.; Alcayne, V.; Altieri, S.; Amaducci, S.; Es-Sghir, H. Amar; Andrzejewski, J.; Babiano-Suarez, V.; Bacak, M.; Balibrea-Correa, J.; Bennett, S.; Bernardes, A. P.; Berthoumieux, E.; Bosnar, D.; Busso, M.; Caamaño, M.; Calviño, F.; Calviani, M.; Cano-Ott, D.; Castelluccio, D. M.; Cerutti, F.; Cescutti, G.; Chasapoglou, S.; Chiaveri, E.; Colombetti, P.; Colonna, N.; Camprini, P. Console; Cortés, G.; Cortés-Giraldo, M. A.; Cosentino, L.; Cristallo, S.; Di Castro, M.; Diacono, D.; Diakaki, M.; Dietz, M.; Domingo-Pardo, C.; Dressler, R.; Dupont, E.; Durán, I.; Eleme, Z.; Fargier, S.; Fernández-Domínguez, B.; Finocchiaro, P.; Fiore, S.; Furman, V.; Gawlik-Ramiega, A.; Gervino, G.; Gilardoni, S.; González-Romero, E.; Guerrero, C.; Gustavino, C.; Heyse, J.; Jenkins, D. G.; Jericha, E.; Junghans, A.; Kadi, Y.; Katabuchi, T.; Knapová, I.; Kokkoris, M.; Kopatch, Y.; Krticka, M.; Kurtulgil, D.; Ladarescu, I.; Lederer-Woods, C.; Lerendegui-Marco, J.; Lerner, G.; Manna, A.; Martínez, T.; Martínez-Cañada, M.; Masi, A.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Matteucci, F.; Maugeri, E. A.; Mazzone, A.; Mendoza, E.; Mengoni, A.; Michalopoulou, V.; Milazzo, P. M.; Mucciola, R.; Murtas, F.; Musacchio González, E.; Musumarra, A.; Negret, A.; Oprea, A.; Pérez-Maroto, P.; Patronis, N.; Pavón-Rodríguez, J. A.; Pellegriti, M. G.; Perkowski, J.; Petrone, C.; Piersanti, L.; Pirovano, E.; Pomp, Stephan; Porras, I.; Protti, N.; Quesada, J. M.; Rauscher, T.; Reifarth, R.; Rochman, D.; Romanets, Y.; Romano, F.; Rubbia, C.; Sánchez-Caballero, A.; Sabaté-Gilarte, M.; Schillebeeckx, P.; Schumann, D.; Sekhar, A.; Smith, A. G.; Sosnin, N. V.; Spelta, M.; Stamati, M. E.; Tagliente, G.; Tarifeño-Saldivia, A.; Tarrío, Diego; Terranova, N.; Torres-Sánchez, P.; Urlass, S.; Valenta, S.; Variale, V.; Vaz, P.; Vescovi, D.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Woods, P. J.; Wright, T.; Zugec, P.

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Measurement of the ¹⁷⁶Yb⁢(𝑛,𝛾) cross section at the n_TOF facility at CERN

García-Infantes, F.

Univ Granada, Granada, Spain.;European Org Nucl Res CERN, Geneva, Switzerland..

Praena, J.

Univ Granada, Granada, Spain.;European Org Nucl Res CERN, Geneva, Switzerland..

Casanovas-Hoste, A.

Univ Valencia, CSIC, Inst Fis Corpuscular, Valencia, Spain..

Henkelmann, R.

Isotope Technol Munich ITM, Munich, Germany..

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2024 (English)In: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 110, no 6, article id 064619Article in journal (Refereed) Published

Abstract [en]

Background: The ¹⁷⁶Yb⁢(𝑛,𝛾)⁢¹⁷⁷Yb→¹⁷⁷Lu reaction is of interest in nuclear medicine as it is the preferred production route for 177Lu. This radioisotope has seen a very fast growth of usage in nuclear medicine in recent years due to its outstanding properties. New data on this reaction could provide useful information for production at new facilities.

Purpose: We aim to resolve resonances in the ¹⁷⁶Yb⁢(𝑛,𝛾)⁢¹⁷⁷Yb reaction for the first time. Previous capture measurement provided data at thermal point and encompassed integral measurements in the range from 3 keV to 1 MeV, where three time-of-flight measurements are available, but with low resolution to resolve the resonances. Transmission measurements from the 1970s resolved and analyzed some resonances.

Method: We measure the neutron capture cross section of ¹⁷⁶Yb⁢(𝑛,𝛾)⁢¹⁷⁷Yb by means of the time-of-flight technique at the Experimental Area 1 of the n_TOF facility at CERN using an enriched ¹⁷⁶Yb₂⁢O₃ sample and an array of four C₆⁢D₆ liquid scintillation detectors.

Results: We have resolved 164 resonances up to 21 keV, including 96 new ones. We also provide new capture experimental data from 90 eV to 3 keV, and we extend the resolved resonance region up to 21 keV. In addition, resonance decay widths, Γ_𝛾 and Γ_𝑛, are provided for all resonances together with resonance energies.

Conclusions: The ¹⁷⁶Yb⁢(𝑛,𝛾)⁢¹⁷⁷Yb reaction has been measured, providing resonance parameters for the first time from a few eV to 21 keV. The analysis of the resonances has been carried out and compared with previous works and existing libraries, revealing discrepancies due to the new information on Γ_𝛾 parameters. Our results are consistent with the Γ_𝑛 parameters obtained in transmission measurements.

Place, publisher, year, edition, pages

American Physical Society, 2024. Vol. 110, no 6, article id 064619

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Subatomic Physics

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URN: urn:nbn:se:uu:diva-551611DOI: 10.1103/PhysRevC.110.064619ISI: 001389562300002Scopus ID: 2-s2.0-85213566632OAI: oai:DiVA.org:uu-551611DiVA, id: diva2:1941083

Available from: 2025-02-27 Created: 2025-02-27 Last updated: 2025-02-27Bibliographically approved

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