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First 80Se(n,γ) cross section measurement with high resolution in the full stellar energy range 1 eV - 100 keV and its astrophysical implications for the s-process
- Source :
- EPJ Web Conf., 16th International Symposium on Nuclei in the Cosmos, 16th International Symposium on Nuclei in the Cosmos, Sep 2021, Chengdu, China. pp.11026, ⟨10.1051/epjconf/202226011026⟩
- Publication Year :
- 2022
-
Abstract
- Most elements heavier than iron have been generated in the stellar media by means of neutron capture reactions, approximately half are produced by the slow neutron capture or s-process. Radiative neutron capture cross section measurements are of fundamental importance for the study of this mechanism. In this contribution we present a brief summary on the measurement and results for the 80Se(n,γ) cross-section. The experiment was carried out at CERN n_TOF EAR1 via the time of flight (ToF) technique, using four C6D6 scintillation detectors with very fast response. More than a hundred new resonances have been analyzed for the first time with a high accuracy. The MACS obtained at kT = 8 keV is 36% smaller than the recommended value in KADo-NiS. Some of the astrophysical implications of this result are elucidated in this contribution.
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- EPJ Web Conf., 16th International Symposium on Nuclei in the Cosmos, 16th International Symposium on Nuclei in the Cosmos, Sep 2021, Chengdu, China. pp.11026, ⟨10.1051/epjconf/202226011026⟩
- Accession number :
- edsair.doi.dedup.....bcbe5594e48f125a0c5095e176c245dd