학술논문
Measurement of the 154Gd(n,γ) cross section and its astrophysical implications
Document Type
article
Author
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
Source
Physics Letters B, Vol 804, Iss , Pp - (2020)
Subject
Language
English
ISSN
0370-2693
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. Keywords: s process, 154Gd, Neutron time of flight, n_TOF