2023/06/22 by E. M. Tursunov, Tursunov, E. M., S. A. Turakulov +3
Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Solar and Stellar Astrophysics (astro-ph.SR)
paper · pdf · doi:10.48550/arxiv.2306.12838
openalex publication_date 2023/06/22 · openalex created_date 2023/06/24 · openalex updated_date 2026/07/28
The astrophysical S factor and reaction rates of the direct capture process 6Li(p,γ)7Be are estimated within a two-body single-channel potential model approach. Central potentials of the Gaussian-form in the 2P3/2 and 2P1/2 waves are adjusted to reproduce the binding energies and the empirical values of the asymptotic normalization coefficients (ANC) for the 7Be(3/2-) ground and 7Be(1/2-) excited bound states, respectively. The parameters of the potential in the most important 2S1/2 scattering channel were fitted to reproduce the empirical phase shifts from the literature and the low-energy astrophysical S factor of the LUNA collaboration. The obtained results for the astrophysical S factor and the reaction rates are in a very good agreement with available experimental data sets. The numerical estimates reproduce not only the absolute values, but also the energy and temperature dependence of the S factor and reaction rates of the LUNA collaboration, respectively. The estimated 7\rm Li/H primordial abundance ratio (4.67± 0.04 )× 10-10 is well consistent with recent BBN result of (4.72± 0.72) × 10-10 after the Planck observation.