Open AccessImpact of Maxwellian averaged neutron capture cross-sections for 182W(n,γ)183W reaction on W isotopic compositions
Author(s) -
Nhu Le Nguyen
Publication year - 2022
Publication title -
tạp chí khoa học đại học huế: khoa học tự nhiên/tạp chí khoa học đại học huế: khoa học tự nhiên (online)
Language(s) - English
Resource type - Journals
eISSN - 2615-9678
pISSN - 1859-1388
DOI - 10.26459/hueunijns.v130i1d.6359
Subject(s) - neutron , physics , nuclear physics , superfluidity , nucleosynthesis , fermi gas , work (physics) , atomic physics , nuclear reaction , condensed matter physics , thermodynamics , electron
The W isotopic compositions have been investigated within the classical approach to the s-process nucleosynthesis. The Maxwellian averaged neutron capture cross-sections (MACS) adopted in the calculation are obtained from the TALYS-1.9 code with four nuclear level density models: the constant temperature plus Fermi gas, the back-shifted Fermi gas, the generalised superfluid, and the microscopic method of Goriely. The results show that the uncertainty from MACS values is already propagated in the W isotopic ratios, and the generalised superfluid prediction exhibits the largest deviation from the observed 182W/184W ratio. In addition, since branching points have not been considered in this work, the MACS values of the 182W(n,γ)183W reaction are found not to affect the estimated 183W/184W ratio.