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

Autori
Dietz, M. ; ... ; Bosnar, Damir ; ... ; Žugec, Petar

Kolaboracija
N_TOF Collaboration

Izvornik
Physical review. C (2469-9985) 103 (2021), 045809; 1-8

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
n_TOF, neutron capture, time of flight, 72Ge

Sažetak
The 72Ge(n, γ) cross section was measured for neutron energies up to 300 keV 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 43 keV, and averaged cross sections from 43 to 300 keV. Maxwellian-averaged cross section values were calculated from kT = 5 to 100 keV, 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA