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

Journal
Date Issued
2020
Author(s)
Mazzone, A.
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Aberle, O.
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Alaerts, G.
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Alcayne, V.
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Amaducci, S.
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Andrzejewski, J.
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Audouin, L.
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Babiano-Suarez, V.
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Bacak, M.
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Barbagallo, M.
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Radeck, D.
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Ramos Doval, D.
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Reifarth, R.
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Rochman, D.
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Rubbia, C.
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Sabaté-Gilarte, M.
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Schillebeeckx, P.
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Schumann, D.
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Smith, A. G.
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Bécares, V.
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Sosnin, N.
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Stamatopoulos, A.
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Tagliente, G.
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Tain, J. L.
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Talip, Z.
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Tarifeño-Saldivia, A. E.
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Tassan-Got, L.
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Torres-Sánchez, P.
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Tsinganis, A.
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Ulrich, J.
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Bečvář, F.
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Urlass, S.
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Valenta, S.
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Vannini, G.
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Variale, V.
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Vaz, P.
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Ventura, A.
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Vlachoudis, V.
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Vlastou, R.
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Wallner, A.
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Bellia, G.
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Woods, P. J.
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Wynants, R.
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Wright, T. J.
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Žugec, P.
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Berthoumieux, E.
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Billowes, J.
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Bosnar, D.
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Brown, A. S.
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Busso, M.
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Caamaño, M.
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Caballero, L.
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Calviani, M.
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Calviño, F.
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Cano-Ott, D.
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Casanovas, A.
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Castelluccio, D. M.
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Cerutti, F.
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Chen, Y. H.
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Chiaveri, E.
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Clai, G.
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Colonna, N.
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Cortés, G. P.
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Cortés-Giraldo, M. A.
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Cosentino, L.
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Damone, L. A.
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Diakaki, M.
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Dietz, M.
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Domingo-Pardo, C.
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Dressler, R.
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Dupont, E.
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Durán, I.
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Eleme, Z.
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Fernández-Domíngez, B.
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Ferrari, A.
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Ferro-Gonçalves, I.
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Finocchiaro, P.
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Furman, V.
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Garg, R.
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Gawlik, A.
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Gilardoni, S.
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Glodariu, T.
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Göbel, K.
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González-Romero, E.
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Guerrero, C.
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Gunsing, F.
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Heinitz, S.
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Heyse, J.
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Jenkins, D. G.
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Jericha, E.
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Kadi, Y.
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Käppeler, F.
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Kimura, A.
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Kivel, N.
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Kokkoris, M.
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Kopatch, Y.
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Kopecky, S.
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Krtička, M.
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Kurtulgil, D.
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Ladarescu, I.
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Lederer-Woods, C.
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Lerendegui-Marco, J.
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Lo Meo, S.
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Lonsdale, S. -J.
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Macina, D.
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Manna, A.
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Martínez, T.
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Masi, A.
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Massimi, C.
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Mastinu, P. F.
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Mastromarco, M.
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Matteucci, F.
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Maugeri, E.
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Mendoza, E.
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Mengoni, A.
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Michalopoulou, V.
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Milazzo, P. M.
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Mingrone, F.
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Mucciola, R.
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Musumarra, A.
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Negret, A.
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Nolte, R.
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Ogállar, F.
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Oprea, A.
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Patronis, N.
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Pavlik, A.
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Perkowski, J.
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Porras, I.
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Praena, J.
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Quesada, J. M.
DOI
Abstract
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.
Volume
804
Start page
135405
Uri
Url
Issn Identifier
0370-2693
Ads BibCode
2020PhLB..80435405M
Rights
open.access
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