%0 Journal Article
%T Measurement of the Gd-154(n, gamma) cross section and its astrophysical implications
%A n_TOF Collaboration (Mazzone, A. et al
%A Babiano-Suarez, V.
%A Caballero, L.
%A Domingo-Pardo, C.
%A Ladarescu, I.
%A Tain, J. L.
%J Physics Letters B
%D 2020
%V 804
%I Elsevier
%@ 0370-2693
%G English
%F n_TOFCollaborationMazzone_etal2020
%O WOS:000548740300022
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4464), last updated on Wed, 29 Jul 2020 09:02:32 +0000
%X The neutron capture cross section of Gd-154 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 Gd-154. 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 Gd-154(n, gamma) cross section reduces the discrepancy between observed and calculated solar s-only isotopic abundances predicted by s-process nucleosynthesis models.
%K s process
%K Gd-154
%K Neutron time of flight
%K n_TOF
%R 10.1016/j.physletb.2020.135405
%U https://arxiv.org/abs/2002.02322
%U https://doi.org/10.1016/j.physletb.2020.135405
%P 135405-6pp