| Title: |
Measurement of the Se$^{78}$ (n , γ) Se$^{79}$ cross section up to 600 keV at the n_TOF facility at CERN |
| Authors: |
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.; Bacak, 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.; Jericha, E.; 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. |
| Source: |
Physical Review C, 110 (6), Art.-Nr.: 065805 ; ISSN: 2469-9985, 1538-4497, 0556-2813, 1089-490X, 2469-9993, 2470-0002 |
| Publisher Information: |
American Physical Society (APS) |
| Publication Year: |
2025 |
| Collection: |
KITopen (Karlsruhe Institute of Technologie) |
| Subject Terms: |
ddc:000; Computer science; information & general works; info:eu-repo/classification/ddc/000 |
| Description: |
The $^{78}$Se(n, γ ) $^{79}$Se cross section has a high impact on the abundances of $^{78}$Se produced during the slow neutron capture process (s process) in massive stars. A measurement of the $^{78}$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 $^{78}$Se abundances produced in the s process in massive stars and AGB stars. Massive stars are now predicted to produce subsolar$^{78}$Se / $^{76}$Se ratios, which is expected since $^{76}$Se is an s-only isotope, while solar $^{78}$Se abundances have also contributions from other nucleosynthesis processes. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
2469-9985; 1538-4497; 0556-2813; 1089-490X; 2469-9993; 2470-0002 |
| Relation: |
info:eu-repo/semantics/altIdentifier/wos/001389541600005; info:eu-repo/semantics/altIdentifier/issn/2469-9985; info:eu-repo/semantics/altIdentifier/issn/1538-4497; info:eu-repo/semantics/altIdentifier/issn/0556-2813; info:eu-repo/semantics/altIdentifier/issn/1089-490X; info:eu-repo/semantics/altIdentifier/issn/2469-9993; info:eu-repo/semantics/altIdentifier/issn/2470-0002; https://publikationen.bibliothek.kit.edu/1000178496; https://publikationen.bibliothek.kit.edu/1000178496/156966662; https://doi.org/10.5445/IR/1000178496 |
| DOI: |
10.5445/IR/1000178496 |
| Availability: |
https://publikationen.bibliothek.kit.edu/1000178496; https://publikationen.bibliothek.kit.edu/1000178496/156966662; https://doi.org/10.5445/IR/1000178496 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/deed.de ; info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.511E9DB |
| Database: |
BASE |