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Measurement of the $^{72}$Ge(n,γ) cross section over a wide neutron energy range at the CERN n_TOF facility

Dietz, M.; Lederer-Woods, C.; Tattersall, A.; Battino, U.; Gunsing, F.; Heinitz, S.; Krtička, M.; Lerendegui-Marco, J.; Reifarth, R.; Valenta, S.; Aberle, O.; Amaducci, S.; Andrzejewski, J.; Audouin, L.; Bacak, M.; Balibrea, J.; Barbagallo, M.; Bečvář, F.; Berthoumieux, E.; ... mehr

Abstract:
The $^{71}$ Ge(n,γ) cross section was measured for neutron energies up to 300keV at the neutron time-of-flight facility n_TOF (CERN), Geneva, for the first time covering energies relevant to heavy-element synthesis in stars. The measurement was performed at the high-resolution beamline EAR-1, using an isotopically enriched $^{72}$GeO$_{2}$ sample. The prompt capture γ rays were detected with four liquid scintillation detectors, optimized for low neutron sensitivity. We determined resonance capture kernelsup to a neutron energy of 43keV, and averaged cross sections from 43 to 300keV. Maxwellian-averaged cross section values were calculated from kT=5 to 100keV, with uncertainties between 3.2% and 7.1 %. The new results significantly reduce uncertainties of abundances produced in the slow neutron capture process in massive stars.


Verlagsausgabe §
DOI: 10.5445/IR/1000133580
Veröffentlicht am 03.06.2021
Originalveröffentlichung
DOI: 10.1103/PhysRevC.103.045809
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Zukunftscampus (CAMPUS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2469-9985
KITopen-ID: 1000133580
Erschienen in Physical Review C
Band 103
Heft 4
Seiten Art.-Nr.: 045809
Nachgewiesen in Dimensions
Web of Science
Scopus
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