First &lt;sup&gt;80&lt;/sup&gt;Se(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

Babiano-Suarez, V.; Balibrea-Correa, J.; Caballero-Ontanaya, L.; Domingo-Pardo, C.; Ladarescu, I.; Lerendegui-Marco, J.; Tain, J.L.; Calviño, F.; Casanovas, A.; Tarifeño-Saldivia, A.; Dressler, R.; Heinitz, S.; Maugeri, E.A.; Rochman, D.; Schumann, D.; Sprung, P.; Ulrich, J.; Žugec, P.

doi: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

Babiano-Suarez V, Balibrea-Correa J, Caballero-Ontanaya L, Domingo-Pardo C, Ladarescu I, Lerendegui-Marco J, Tain JL, Calviño F, Casanovas A, Tarifeño-Saldivia A, Dressler R, Heinitz S, Maugeri EA, Rochman D, Schumann D, Sprung P, Ulrich J, Žugec P, et al.

Citation

Babiano-Suarez, V., Balibrea-Correa, J., Caballero-Ontanaya, L., Domingo-Pardo, C., Ladarescu, I., Lerendegui-Marco, J., … Žugec, P. (2022). 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. In W. Liu, Y. Wang, B. Guo, X. Tang, & S. Zeng (Eds.), 16th symposium on nuclei in the cosmos, NIC-XVI 2021. Symposium on nuclei in the cosmos (p. 11026 (8 pp.). https://doi.org/10.1051/epjconf/202226011026

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:59859

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 KADoNiS. Some of the astrophysical implications of this result are elucidated in this contribution.

Details

Publication Type

Proceedings Paper

Title

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

Author(s)

Babiano-Suarez, V.

Balibrea-Correa, J.

Caballero-Ontanaya, L.

Domingo-Pardo, C.

Ladarescu, I.

Lerendegui-Marco, J.

Tain, J.L.

Calviño, F.

Casanovas, A.

Tarifeño-Saldivia, A.

Dressler, R. (4701 Heavy Elements)