Neutron spectroscopic factors of 7Li and astrophysical 6Li(n,g)7Li reaction rates

Abstract

Angular distributions of the 7Li(6Li,6Li)7Li elastic scattering and the 7Li(6Li,7Li_{g.s.})6Li, 7Li(6Li,7Li*_{0.48})6Li transfer reactions at Ec.m. = 23.7 MeV were measured with the Q3D magnetic spectrograph. The optical potential of 6Li+7Li was obtained by fitting the elastic scattering differential cross sections. Based on the distorted wave Born approximation (DWBA) analysis, spectroscopic factors of 7Li=6Li+n were determined to be 0.73 +- 0.05 and 0.90 +- 0.09 for the ground and first exited states in 7Li, respectively. Using the spectroscopic factors, the cross sections of the 6Li(n,g)7Li direct neutron capture reactions and the astrophysical 6Li(n,g)7Li reaction rates were derived.

arXiv comment4 pages, 5 figures

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Cited by in corpus (5)

• Quantum Monte Carlo calculations of spectroscopic overlaps in $A\le 7$ nuclei
• Gamow shell model description of radiative capture reactions ${}^6$Li$(p,\gamma )$${}^7$Be and ${}^6$Li$(n,\gamma )$${}^7$Li
• Spectroscopic factors for low-lying 16N levels and the astrophysical 15N(n,gamma)16N reaction rate
• Proton widths of the low-lying 16F states from the 15N(7Li, 6Li)16N reaction
• Ab initio single-neutron spectroscopic overlaps in lithium isotopes