Measurement of the ⁷⁷Se (n,γ) cross section up to 200 keV at the n_TOF facility at CERN

Autor(en)

, N. V. Sosnin, C. Lederer-Woods, M. Krtička, R. Garg, M. Dietz, M. Bacak, M. Barbagallo, U. Battino, S. Cristallo, L. A. Damone, M. Diakaki, S. Heinitz, D. Macina, M. Mastromarco, F. Mingrone, A. St J. Murphy, G. Tagliente, S. Valenta, D. Vescovi, O. Aberle, V. Alcayne, S. Amaducci, J. Andrzejewski, L. Audouin, V. Bécares, V. Babiano-Suarez, F. Bečvář, G. Bellia, E. Berthoumieux, J. Billowes, D. Bosnar, A. Brown, M. Busso, M. Caamaño, L. Caballero, F. Calviño, M. Calviani, D. Cano-Ott, A. Casanovas, F. Cerutti, Y. H. Chen, E. Chiaveri, N. Colonna, G. Cortés, M. A. Cortés-Giraldo, L. Cosentino, C. Domingo-Pardo, R. Dressler, A. Pavlik, A. Wallner

Abstrakt

The Se77(n,γ) reaction is of importance for Se77 abundance during the slow neutron capture process in massive stars. We have performed a new measurement of the Se77 radiative neutron capture cross section at the Neutron Time-of-Flight facility at CERN. Resonance capture kernels were derived up to 51 keV and cross sections up to 200 keV. Maxwellian-averaged cross sections were calculated for stellar temperatures between kT=5keV and kT=100keV, with uncertainties between 4.2% and 5.7%. Our results lead to substantial decreases of 14% and 19% in Se77 abundances produced through the slow neutron capture process in selected stellar models of 15M⊙ and 2M⊙, respectively, compared to using previous recommendation of the cross section.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

University of Edinburgh, Charles University Prague, Michigan State University, Physikalisch-Technische Bundesanstalt, European Organization for Nuclear Research (CERN), Technische Universität Wien, Université Paris Saclay, Istituto Nazionale di Fisica Nucleare (INFN), Roma, University of Hull, INAF-Osservatorio Astrofisico di Torino, Università degli Studi di Bari Aldo Moro, National Technical University of Athens (NTUA), Paul Scherrer Institute, Johann Wolfgang Goethe-Universität Frankfurt am Main, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Università degli Studi di Catania, University of Lodz, Institut pluridisciplinaire Hubert Curien, Universitat de València, University of Manchester, University of Zagreb, University of York, Università degli Studi di Perugia, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Universidad de Sevilla, Australian National University

Journal

Physical Review C

Band

107

Anzahl der Seiten

9

ISSN

2469-9985

DOI

https://doi.org/10.1103/PhysRevC.107.065805

Publikationsdatum

06-2023

Peer-reviewed

Ja

ÖFOS 2012

103014 Kernphysik

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/59e9d3f0-701b-41f9-968e-cca519c622b6