TY  - JOUR
AU  - n_TOF Collaboration (Amaducci, S. et al
AU  - Babiano-Suarez, V.
AU  - Caballero-Ontanaya, L.
AU  - Domingo-Pardo, C.
AU  - Ladarescu, I.
AU  - Tain, J. L.
AU  - Tarifeño-Saldivia, A.
PY  - 2024
DA  - 2024//
TI  - Measurement of the 140Ceðn;γþ Cross Section at n_TOF and Its Astrophysical Implications for the Chemical Evolution of the Universe
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 122701
EP  - 8pp
VL  - 132
IS  - 12
PB  - Amer Physical Soc
AB  - 140Ce(n, gamma) is a key reaction for slow neutron -capture (s -process) nucleosynthesis due to being a bottleneck in the reaction flow. For this reason, it was measured with high accuracy (uncertainty approximate to 5%) at the n_TOF facility, with an unprecedented combination of a high purity sample and low neutron -sensitivity detectors. The measured Maxwellian averaged cross section is up to 40% higher than previously accepted values. Stellar model calculations indicate a reduction around 20% of the s -process contribution to the Galactic cerium abundance and smaller sizeable differences for most of the heavier elements. No variations are found in the nucleosynthesis from massive stars.
SN  - 0031-9007
UR  - https://doi.org/10.1103/PhysRevLett.132.122701
DO  - 10.1103/PhysRevLett.132.122701
LA  - English
N1  - WOS:001202102900011
ID  - n_TOFCollaborationAmaducci_etal2024
ER  -