Measurement of the 72Ge(n,γ) cross section over a wide neutron energy range at the CERN n_TOF facility (CROSBI ID 294072)
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Podaci o odgovornosti
Dietz, M. ; ... ; Bosnar, Damir ; ... ; Žugec, Petar
n_TOF Collaboration
engleski
Measurement of the 72Ge(n,γ) cross section over a wide neutron energy range at the CERN n_TOF facility
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.
n_TOF, neutron capture, time of flight, 72Ge
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Podaci o izdanju
103 (045809)
2021.
1-8
objavljeno
2469-9985
2469-9993
10.1103/PhysRevC.103.045809