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

n_TOF Collaboration, M Dietz, C. Lederer-Woods, A Tattersall, U Battino, D Kahl, S J Lonsdale, P. J. Woods

Research output: Contribution to journalArticlepeer-review

Abstract

The 72Ge(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 72GeO2 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.
Original languageEnglish
Article number045809
Pages (from-to)1-8
Number of pages8
JournalPhysical Review C
Volume103
Issue number4
DOIs
Publication statusPublished - 27 Apr 2021

Fingerprint

Dive into the research topics of 'Measurement of the 72Ge(n,γ) cross section over a wide neutron energy range at the CERN n_TOF facility'. Together they form a unique fingerprint.

Cite this