Publikationen

Measurement of the <sup>154</sup>Gd(n,γ) cross section and its astrophysical implications

Autor(en)
A. Mazzone, S. Cristallo, O. Aberle, G. Alaerts, V. Alcayne, S. Amaducci, J. Andrzejewski, L. Audouin, V. Babiano-Suarez, M. Bacak, M. Barbagallo, V. Bécares, F. Bečvář, G. Bellia, E. Berthoumieux, J. Billowes, D. Bosnar, A. S. Brown, M. Busso, M. Caamaño, L. Caballero, M. Calviani, F. Calviño, D. Cano-Ott, A. Casanovas, D. M. Castelluccio, F. Cerutti, Y. H. Chen, E. Chiaveri, G. Clai, N. Colonna, G. P. Cortés, M. A. Cortés-Giraldo, L. Cosentino, L. A. Damone, M. Diakaki, M. Dietz, C. Domingo-Pardo, R. Dressler, E. Dupont, I. Durán, Z. Eleme, B. Fernández-Domíngez, A. Ferrari, I. Ferro-Gonçalves, P. Finocchiaro, V. Furman, R. Garg, A. Gawlik, S. Gilardoni, T. Glodariu, K. Göbel, E. González-Romero, C. Guerrero, F. Gunsing, S. Heinitz, J. Heyse, D. G. Jenkins, E. Jericha, Y. Kadi, F. Käppeler, A. Kimura, N. Kivel, M. Kokkoris, Y. Kopatch, S. Kopecky, M. Krtička, D. Kurtulgil, I. Ladarescu, C. Lederer-Woods, J. Lerendegui-Marco, S. Lo Meo, S. J. Lonsdale, D. Macina, A. Manna, T. Martínez, A. Masi, C. Massimi, P. F. Mastinu, M. Mastromarco, F. Matteucci, E. Maugeri, E. Mendoza, A. Mengoni, V. Michalopoulou, P. M. Milazzo, F. Mingrone, R. Mucciola, A. Musumarra, A. Negret, R. Nolte, F. Ogállar, A. Oprea, N. Patronis, A. Pavlik, J. Perkowski, L. Piersanti, I. Porras, J. Praena, J. M. Quesada, D. Radeck, D. Ramos Doval, R. Reifarth, D. Rochman, C. Rubbia, M. Sabaté-Gilarte, A. Saxena, P. Schillebeeckx, D. Schumann, A. G. Smith, N. Sosnin, A. Stamatopoulos, G. Tagliente, J. L. Tain, Z. Talip, A. E. Tarifeño-Saldivia, L. Tassan-Got, P. Torres-Sánchez, A. Tsinganis, J. Ulrich, S. Urlass, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, D. Vescovi, V. Vlachoudis, R. Vlastou, A. Wallner, P. J. Woods, R. Wynants, T. J. Wright, P. Žugec
Abstrakt

The neutron capture cross section of 154Gd was measured from 1 eV to 300 keV in the experimental area located 185 m from the CERN n_TOF neutron spallation source, using a metallic sample of gadolinium, enriched to 67% in 154Gd. The capture measurement, performed with four C6D6 scintillation detectors, has been complemented by a transmission measurement performed at the GELINA time-of-flight facility (JRC-Geel), thus minimising the uncertainty related to sample composition. An accurate Maxwellian averaged capture cross section (MACS) was deduced over the temperature range of interest for s process nucleosynthesis modelling. We report a value of 880(50) mb for the MACS at kT=30 keV, significantly lower compared to values available in literature. The new adopted 154Gd(n,γ) cross section reduces the discrepancy between observed and calculated solar s-only isotopic abundances predicted by s-process nucleosynthesis models.

Organisation(en)
Isotopenphysik
Externe Organisation(en)
Istituto Nazionale di Fisica Nucleare, Roma, Consiglio Nazionale delle Ricerche (CNR), Padua, Università degli Studi di Perugia, INAF-Osservatorio Astrofisico di Torino, European Organisation for Nuclear Research (CERN), European Commission, Joint Research Centre, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Università degli Studi di Catania, University of Lodz, Centre National De La Recherche Scientifique (CNRS), Universitat de València, Technische Universität Wien, Université Paris-Saclay, Charles University Prague, University of Manchester, University of Zagreb, York University, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, ENEA Centro Ricerche Bologna, Universidad de Sevilla, Università degli Studi di Bari, National Technical University of Athens (NTUA), University of Edinburgh, Paul Scherrer Institute, University of Ioannina, Associação EURATOM/IST, Dubna, Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN HH), Johann Wolfgang Goethe-Universität Frankfurt am Main, Karlsruher Institut für Technologie, Japan Atomic Energy Agency, Università degli Studi di Bologna, Istituto Nazionale di Fisica Nucleare, Perugia, Sezione di Legnaro, Università degli Studi di Trieste, Physikalisch-Technische Bundesanstalt (PTB), Universidad de Granada, Bhabha Atomic Research Centre, Forschungszentrum Dresden Rossendorf (FZD), Gran Sasso Science Institute, Australian National University, Joint Research Centre
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Band
804
Anzahl der Seiten
6
ISSN
0370-2693
DOI
https://doi.org/10.1016/j.physletb.2020.135405
Publikationsdatum
05-2020
Peer-reviewed
Ja
ÖFOS 2012
103014 Kernphysik
Schlagwörter
ASJC Scopus Sachgebiete
Nuclear and High Energy Physics
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/measurement-of-the-154gdn-cross-section-and-its-astrophysical-implications(da00efb0-0e8e-4f58-b8af-5f39c333118f).html