2020/08/09 by N. A. Burkova, N.A. Burkova, S. B. Dubovichenko +2 · 3 citations
Chemistry · Physics and Astronomy · #Astronomical and nuclear sciences #Atomic physics #Big Bang nucleosynthesis #Chemistry #Cross section (physics) #Neutron #Nuclear Physics and Applications #Nuclear physics #Nuclear physics research studies #Nuclear reaction #Nucleosynthesis #Physics #Radiative transfer #Reaction rate #Resonance (particle physics) #nucl-th
paper · pdf · doi:10.1088/1361-6471/abe2b5
published in Journal of Physics G Nuclear and Particle Physics 48(4), 045201 (IOP Publishing) · 17p., 6 fig., 2 tab., 60 ref
arxiv created 2020/08/09 · openalex created_date 2020/08/13 · openalex publication_date 2021/02/03 · arxiv updated 2021/05/18 · openalex updated_date 2026/08/05
Abstract 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 7 Li 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 1 meV to 1.5 MeV, where experimental data are available. Based on the calculated total cross sections up to 5 MeV, the reaction rate is calculated and its analytical approximation is carried out. Resonance structure of 7 Li( n , γ ) 8 Li cross section and its impact on the reaction rate is examined. It is shown that the 7 Li( n , γ ) 8 Li reaction dominates at T 9 < 0.1 as opposed to the burning of 7 Li in the 7 Li( 3 H, n ) 9 Be and 7 Li( 4 Нe, γ ) 11 B reactions, but comparable to ( d , γ ), ( d , p ), and ( p , γ ) at T 9 ∼ 1.