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  • nTOF Collaboration
  • M. Dietz
  • C. Lederer-Woods
  • A. Tattersall
  • U. Battino
  • F. Gunsing
  • S. Heinitz
  • M. Krtička
  • J. Lerendegui-Marco
  • R. Reifarth
  • S. Valenta
  • O. Aberle
  • S. Amaducci
  • J. Andrzejewski
  • L. Audouin
  • M. Bacak
  • J. Balibrea
  • M. Barbagallo
  • F. Bečvář
  • E. Berthoumieux
  • J. Billowes
  • D. Bosnar
  • A. Brown
  • M. Caamaño
  • F. Calviño
  • M. Calviani
  • D. Cano-Ott
  • R. Cardella
  • A. Casanovas
  • F. Cerutti
  • Y. H. Chen
  • E. Chiaveri
  • N. Colonna
  • G. Cortés
  • M. A. Cortés-Giraldo
  • L. Cosentino
  • L. A. Damone
  • M. Diakaki
  • C. Domingo-Pardo
  • R. Dressler
  • E. Dupont
  • I. Durán
  • B. Fernández-Domínguez
  • A. Ferrari
  • P. Ferreira
  • P. Finocchiaro
  • V. Furman
  • K. Göbel
  • A. R. García
  • A. Gawlik
  • T. Rauscher
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Original languageEnglish
Article number045809
Number of pages8
JournalPhysical Review C
Volume103
Issue4
DOIs
Publication statusPublished - 27 Apr 2021

Abstract

The Ge72(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 GeO272 sample. The prompt capture γ rays were detected with four liquid scintillation detectors, optimized for low neutron sensitivity. We determined resonance capture kernels up 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.

Notes

© 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. https://creativecommons.org/licenses/by/4.0/

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