TY  - JOUR
AU  - n_TOF Collaboration (Mazzone, A. et al
AU  - Babiano-Suarez, V.
AU  - Caballero, L.
AU  - Domingo-Pardo, C.
AU  - Ladarescu, I.
AU  - Tain, J. L.
PY  - 2020
DA  - 2020//
TI  - Measurement of the Gd-154(n, gamma) cross section and its astrophysical implications
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 135405
EP  - 6pp
VL  - 804
PB  - Elsevier
KW  - s process
KW  - Gd-154
KW  - Neutron time of flight
KW  - n_TOF
AB  - 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.
SN  - 0370-2693
UR  - https://arxiv.org/abs/2002.02322
UR  - https://doi.org/10.1016/j.physletb.2020.135405
DO  - 10.1016/j.physletb.2020.135405
LA  - English
N1  - WOS:000548740300022
ID  - n_TOFCollaborationMazzone_etal2020
ER  -