The comparative role of 7Li(n,γ) reaction in primordial nucleosynthesis

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 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.

arXiv comment17p., 6 fig., 2 tab., 60 ref

References in corpus (26)

• NACRE II: an update of the NACRE compilation of charged-particle-induced thermonuclear reaction rates for nuclei with mass number $A<16$
• Standard Big-Bang Nucleosynthesis up to CNO with an improved extended nuclear network
• New Nuclear Reaction Flow during r-Process Nucleosynthesis in Supernovae: Critical Role of Light Neutron-Rich Nuclei
• Frontiers in Nuclear Astrophysics
• Non-extensive Statistics Solution to the Cosmological Lithium Problem
• Primordial Nucleosynthesis and the Abundances of Beryllium and Boron
• Asymptotic normalization coefficients for 8B->7Be+p from a study of 8Li->7Li+n
• Resonant Destruction as a Possible Solution to the Cosmological Lithium Problem
• New Nuclear Physics for Big Bang Nucleosynthesis
• Thermonuclear reaction rates and primordial nucleosynthesis
• Revised Big Bang Nucleosynthesis with long-lived negatively charged massive particles: updated recombination rates, primordial 9Be nucleosynthesis, and impact of new 6Li limits
• Resonance Contribution to Radiative Neutron Capture on Lithium-7
• Thermonuclear Processes for Three Body System in the Potential Cluster Model
• 8li(n,g)9li reaction at superlow energies
• The Astrophysical S-Factor of the Reaction ${}^7$be(p,$\gamma$)${}^8$B in the Direct Capture Model
• The 7Li(n,gamma)8Li Radiative Capture at Astrophysical Energies
• On the relative velocity distribution for general statistics and an application to big-bang nucleosynthesis under Tsallis statistics
• Determining the 7Li(n,gamma) cross section via Coulomb dissociation of 8Li
• Light radioactive nuclei capture reactions with phenomenological potential models
• Influence of low-lying resonances on reaction rates for n10B capture
• Influence of resonances on the 11B(n,gamma)12B capture reaction rate. Capture to the ground state of 12B
• New Results for Neutron Radiative Capture on 10be at Energies from 25.3 meV to 10.0 meV
• Color transparency in the reaction nuclear rho production by virtual photons
• Role of resonances in the 8li(p,g)9be capture on reaction rate of the relevant astrophysical synthesis of 9be
• Reaction Rate Of p14N --> 15Ogamma Capture To All Bound States In Potential Cluster Model
• Reanalysis of ${}^{13}$N($p,\gamma$)${}^{14}$O reaction and its role in stellar CNO cycle

Cited by in corpus (1)

• Reaction rate of the radiative capture proton by 10B