Measurement of the 72Ge(n, γ) cross section over a wide neutron energy range at the CERN n_TOF facility
| Autor: | Dietz, M., Porras Sánchez, José Ignacio, Praena Rodríguez, Antonio Javier, TOF Collaboration |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Zdroj: | Digibug. Repositorio Institucional de la Universidad de Granada instname Digibug: Repositorio Institucional de la Universidad de Granada Universidad de Granada (UGR) |
| DOI: | 10.1103/PhysRevC.103.045809 |
| Popis: | This work was supported by the Adolf Messer Foundation, the Austrian Science Fund FWF (J 3503), the Science and Technology Facilities Council UK (ST/M006085/1), the European Research Council ERC-2015-STG No. 677497, the Croatian Science Foundation under the project 8570, the MSMT of the Czech Republic, the Charles University UNCE/SCI/013 project, and by the funding agencies of the participating institutes. 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. Adolf Messer Foundation Austrian Science Fund (FWF) J 3503 UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC) ST/M006085/1 European Research Council (ERC) European Commission 677497 Croatian Science Foundation 8570 Ministry of Education, Youth & Sports - Czech Republic Charles University UNCE/SCI/013 |
| Databáze: | OpenAIRE |
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