Artículo
Measurement of the 72 Ge ( n , γ ) cross section over a wide neutron energy range at the CERN n_TOF facility
Autor/es | Dietz, M.
Lederer Woods, Claudia Tattersall, A. Battino, Umberto Gunsing, Frank Heinitz, Stephan Lerendegui Marco, Jorge Chiaveri, Enrico Cortés Giraldo, Miguel Antonio Guerrero Sánchez, Carlos Quesada Molina, José Manuel Sabaté Gilarte, Marta Žugec, P. |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-02-07 |
Publicado en |
|
Resumen | The
72
Ge
(
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 ... The 72 Ge ( 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 72 Ge O 2 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 k T = 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. |
Agencias financiadoras | Austrian Science Fund (FWF) Science and Technology Facilities Council UK European Research Council (ERC) Croatian Science Foundation Ministry of Education, Youth and Sport of the Czech Republic (MSMT) Charles University, Czech Republic |
Identificador del proyecto | FWF J3503
ST/M006085/1 ERC 2015-STG No.677497 8570 UNCE/SCI/013 |
Cita | Dietz, M., Lederer Woods, C., Tattersall, A., Battino, U., Gunsing, F., Heinitz, S.,...,Žugec, P. (2021). Measurement of the 72 Ge ( n , γ ) cross section over a wide neutron energy range at the CERN n_TOF facility. Physical Review C, 103, 045809. |
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PhysRevC.103.045809.pdf | 670.9Kb | [PDF] | Ver/ | |