Measurement of the Se (n , γ) Se cross section up to 600 keV at the n_TOF facility at CERN
n_TOF Collaboration; Sosnin, N. V. ; Lederer-Woods, C.; Garg, R.; Battino, U.; Cristallo, S.; Dietz, M.; Heinitz, S.; Krtička, M.; Reifarth, R.; Valenta, S.; Vescovi, D.; Aberle, O.; Alcayne, V.; Amaducci, S.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Babiano-Suarez, V.; ... mehrBacak, M.; Barbagallo, M.; Bečvář, F.; Bellia, G.; Berthoumieux, E.; Billowes, J.; Bosnar, D.; Brown, A.; Busso, M.; Caamaño, M.; Caballero, L.; Calviño, F.; Calviani, M.; Cano-Ott, D.; Casanovas, A.; Cerutti, F.; Chen, Y. H.; Chiaveri, E.; Colonna, N.; Cortés, G.; Cortés-Giraldo, M. A.; Cosentino, L.; Damone, L. A.; Diakaki, M.; Domingo-Pardo, C.; Dressler, R.; Dupont, E.; Durán, I.; Eleme, Z.; Fernández-Domínguez, B.; Ferrari, A.; Finocchiaro, P.; Furman, V.; Göbel, K.; Gawlik-Ramięga, A.; Gilardoni, S.; Glodariu, T.; Gonçalves, I. F.; González-Romero, E.; Guerrero, C.; Gunsing, F.; Harada, H.; Heyse, J.; Jenkins, D. G.; Käppeler, F. 1; Jericha, E.; Käppeler, F. 1; Kadi, Y.; Kimura, A.; Kivel, N.; Kokkoris, M.; Kopatch, Y.; Kurtulgil, D.; Ladarescu, I.; Leeb, H.; Lerendegui-Marco, J.; Lo Meo, S.; Lonsdale, S. J.; Manna, A.; Martínez, T.; Masi, A.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Matteucci, F.; Maugeri, E. A.; Mazzone, A.; Mendoza, E.; Mengoni, A.; Michalopoulou, V.; Milazzo, P. M.; Murphy, A. St J.; Musumarra, A.; Negret, A.; Nolte, R.; Ogállar, F.; Oprea, A.; Patronis, N.; Pavlik, A.; Perkowski, J.; Piersanti, L.; Porras, I.; Praena, J.; Quesada, J. M.; Radeck, D.; Ramos-Doval, D.; Rauscher, T.; Rochman, D.; Rubbia, C.; Sabaté-Gilarte, M.; Saxena, A.; Schillebeeckx, P.; Schumann, D.; Smith, A. G.; Stamatopoulos, A.; Tagliente, G.; Tain, J. L.; Talip, T.; Tarifeño-Saldivia, A.; Tassan-Got, L.; Torres-Sánchez, P.; Tsinganis, A.; Ulrich, J.; Urlass, S.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Woods, P. J.; Wright, T.
1 Zukunftscampus (CAMPUS), Karlsruher Institut für Technologie (KIT)
Abstract:
The Se(n, γ ) Se cross section has a high impact on the abundances of Se produced during the slow
neutron capture process (s process) in massive stars. A measurement of the Se radiative neutron capture cross
section has been performed at the Neutron Time-of-Flight facility at CERN using a set of liquid scintillation
detectors that have been optimized for a low sensitivity to neutrons. We present resonance capture kernels up
to 70 keV and cross section from 70 to 600 keV. Maxwellian-averaged cross section (MACS) values were
calculated for stellar temperatures between kT = 5 and 100 keV, with uncertainties between 4.6% and 5.8%.
The new MACS values result in substantial decreases of 20–30% of Se abundances produced in the s process
in massive stars and AGB stars. Massive stars are now predicted to produce subsolarSe / Se ratios, which
is expected since Se is an s-only isotope, while solar Se abundances have also contributions from other
nucleosynthesis processes.
Zugehörige Institution(en) am KIT |
Zukunftscampus (CAMPUS) |
Publikationstyp |
Zeitschriftenaufsatz |
Publikationsmonat/-jahr |
12.2024 |
Sprache |
Englisch |
Identifikator |
ISSN: 2469-9985, 1538-4497, 0556-2813, 1089-490X, 2469-9993, 2470-0002
KITopen-ID: 1000178496 |
Erschienen in |
Physical Review C |
Verlag |
American Physical Society (APS) |
Band |
110 |
Heft |
6 |
Seiten |
Art.-Nr.: 065805 |
Vorab online veröffentlicht am |
17.12.2024 |
Nachgewiesen in |
Dimensions Web of Science Scopus
|