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Measurement of 73Ge(n,gamma) cross sections and implications for stellar nucleosynthesis

Author
Lederer-Woods, C.; Battino, U.; Ferreira, P.; Calviño, F.; Cortes, G.; Riego, A.
Type of activity
Journal article
Journal
Physics letters B
Date of publication
2019-03-10
Volume
790
First page
458
Last page
465
DOI
10.1016/j.physletb.2019.01.045
Project funding
Beta decay and reaction studies for nuclear structure, astrophysics and applications
Datos nucleares para física nuclear e ingeniería nuclear
Repository
http://hdl.handle.net/2117/130802 Open in new window
https://arxiv.org/abs/1901.10207 Open in new window
URL
https://www.sciencedirect.com/science/article/pii/S037026931930070X?via%3Dihub Open in new window
Abstract
73Ge(n,gamma) cross sections were measured at the neutron time-of-flight facility n_TOF at CERN up to neutron energies of 300 keV, providing for the first time experimental data above 8 keV. Results indicate that the stellar cross section at keV is 1.5 to 1.7 times higher than most theoretical predictions. The new cross sections result in a substantial decrease of 73Ge produced in stars, which would explain the low isotopic abundance of 73Ge in the solar system.
Citation
Lederer-Woods, C. [et al.]. Measurement of 73Ge(n,gamma) cross sections and implications for stellar nucleosynthesis. "Physics letters B", 10 Març 2019, vol. 790, p. 458-465.
Keywords
CERN, Capture cross section, Cross section, Neutron, Nuclear reaction, Nucleosynthesis, S process, nTOF
Group of research
ANT - Advanced Nuclear Technologies Research Group

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