Issue |
EPJ Web Conf.
Volume 260, 2022
The 16th International Symposium on Nuclei in the Cosmos (NIC-XVI)
|
|
---|---|---|
Article Number | 11026 | |
Number of page(s) | 8 | |
Section | Poster | |
DOI | https://doi.org/10.1051/epjconf/202226011026 | |
Published online | 24 February 2022 |
https://doi.org/10.1051/epjconf/202226011026
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
1 Instituto de Fisica Corpuscular, CSIC - Universidad de Valencia, Spain
2 Universidad de Sevilla, Spain
3 European Organization for Nuclear Research (CERN), Switzerland
4 Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT), Spain
5 INFN Laboratori Nazionali del Sud, Catania, Italy
6 Dipartimento di Fisica e Astronomia, Universita di Catania, Italy
7 University of Lodz, Poland
8 Institut de Physique Nucleaire, CNRS-IN2P3, Univ. Paris-Sud, Universite Paris-Saclay, F-91406 Orsay Cedex, France
9 TU Wien, Atominstitut, Stadionallee 2, 1020 Wien, Austria
10 CEA Irfu, Universite Paris-Saclay, F-91191 Gif-sur-Yvette, France
11 Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
12 University of Manchester, United Kingdom
13 Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
14 University of York, United Kingdom
15 Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Italy
16 Dipartimento di Fisica e Geologia, Universita di Perugia, Italy
17 University of Santiago de Compostela, Spain
18 Universitat Politecnica de Catalunya, Spain
19 Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Teramo, Italy
20 Dipartimento Interateneo di Fisica, Universita degli Studi di Bari, Italy
21 National Technical University of Athens, Greece
22 School of Physics and Astronomy, University of Edinburgh, United Kingdom
23 Paul Scherrer Institut (PSI), Villigen, Switzerland
24 Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
25 University of Ioannina, Greece
26 Joint Institute for Nuclear Research (JINR), Dubna, Russia
27 Goethe University Frankfurt, Germany
28 Instituto Superior Tecnico, Lisbon, Portugal
29 Japan Atomic Energy Agency (JAEA), Tokai-Mura, Japan
30 European Commission, Joint Research Centre (JRC), Geel, Retieseweg 111, B-2440 Geel, Belgium
31 Helmholtz-Zentrum Dresden-Rossendorf, Germany
32 Karlsruhe Institute of Technology, Campus North, IKP, 76021 Karlsruhe, Germany
33 Charles University, Prague, Czech Republic
34 Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy
35 Dipartimento di Fisica e Astronomia, Universita di Bologna, Italy
36 Istituto Nazionale di Fisica Nucleare, Sezione di Legnaro, Italy
37 Consiglio Nazionale delle Ricerche, Bari, Italy
38 Agenzia nazionale per le nuove tecnologie (ENEA), Bologna, Italy
39 Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Italy
40 Dipartimento di Fisica e Astronomia, Universita di Catania, Italy
41 Horia Hulubei National Institute of Physics and Nuclear Engineering, Romania
42 University of Granada, Spain
43 University of Vienna, Faculty of Physics, Vienna, Austria
44 Department of Physics, University of Basel, Switzerland
45 Centre for Astrophysics Research, University of Hertfordshire, United Kingdom
46 Bhabha Atomic Research Centre (BARC), India
47 Australian National University, Canberra, Australia
Published online: 24 February 2022
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.
© The Authors, published by EDP Sciences, 2022
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