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80Se(n,?) cross-section measurement at CERN n TOF

Babiano-Suarez, V.; Aberle, O.; Alcayne, V.; Amaducci, S.; Andrzejewski, J.; Audouin, L.; Bacak, M.; Balibrea-Correa, J.; Barbagallo, M.; Bennett, S.; Berthoumieux, E.; Bosnar, D.; Brown, A. S.; Busso, M.; Caamao, M.; Caballero, L.; Calviani, M.; Calvio, F.; Cano-Ott, D.; ... mehr

Abstract:

Radiative neutron capture cross section measurements are of fundamental importance for the study of the slow neutron capture (s-) process of nucleosynthesis. This mechanism is responsible for the formation of most elements heavier than iron in the Universe. Particularly relevant are branching nuclei along the s-process path, which are sensitive to the physical conditions of the stellar environment. One such example is the branching at 79Se (3.27 × 105 y), which shows a thermally dependent β-decay rate. However, an astrophysically consistent interpretation requires also the knowledge of the closest neighbour isotopes involved. In particular, the 80Se(n,γ) cross section directly affects the stellar yield of the "cold" branch leading to the formation of the s-only 82Kr. Experimentally, there exists only one previous measurement on 80Se using the time of flight (TOF) technique. However, the latter suffers from some limitations that are described in this presentation. These drawbacks have been significantly improved in a recent measurement at CERN n TOF. This contribution presents a summary of the latter measurement and the status of the data analysis.

Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen-ID: 1000127033
HGF-Programm 51.03.04 (POF III, LK 01) Kosmische Strahlung Technologien
Erschienen in Journal of physics / Conference series
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 1668
Heft 1
Seiten 012001
Nachgewiesen in Scopus
Dimensions
OpenAlex

Verlagsausgabe §
DOI: 10.5445/IR/1000127033
Veröffentlicht am 27.12.2020
Originalveröffentlichung
DOI: 10.1088/1742-6596/1668/1/012001
Scopus
Zitationen: 1
Dimensions
Zitationen: 1
Seitenaufrufe: 147
seit 28.12.2020
Downloads: 69
seit 04.01.2021
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