The comparative role of 7Li(n,{\gamma}) reaction in primordial nucleosynthesis

Within the framework of the modified potential cluster model with forbidden states and their classification according to Young diagrams, the possibility of describing experimental data on the total cross sections of the neutron radiative capture on 7Li is considered. It is shown that the model used...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2020-08
Main Authors: Burkova, N A, Dubovichenko, S B, Dzhazairov-Kakhramanov, A V, Nurakhmetova, S Zh
Format: Article
Language:English
Subjects:
Absorption cross sections
Nuclear fusion
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Within the framework of the modified potential cluster model with forbidden states and their classification according to Young diagrams, the possibility of describing experimental data on the total cross sections of the neutron radiative capture on 7Li is considered. It is shown that the model used and the methods for constructing potentials make it possible to correctly describe the behavior of experimental cross sections at energies of 5 meV (5 10-3 eV) to 1 MeV(1 10+6 eV), where experimental data are available. Based on the obtained total cross sections up to 5 MeV, the reaction rate was calculated and its analytical approximation was carried out. It was shown that the 7Li(n,g)8Li reaction dominates at T9 < 0.1-0.2 as against with the burning of 7Li in reactions 7Li(3H,n)9Be and 7Li(4He,g)11B.
ISSN:2331-8422
DOI:10.48550/arxiv.2008.03695