Neutron Spectroscopic Factors of ^7Li and Astrophysical ^6Li（n,γ）^7Li Reaction Rates

• Published in: Chinese physics letters Vol. 27; no. 5; pp. 54 - 57
• Main Author: 苏俊 李志宏 郭冰 白希祥 李志常 刘建成 王友宝 连钢 曾晟 王宝祥 颜胜权 李云居 李二涛 樊启文 柳卫平
• Format: Journal Article
• Language: English
• Published: 2010
• Subjects: Q3D磁谱仪; 反应率; 天体物理学; 弹性散射微分截面; 扭曲波玻恩近似; 转移反应
• ISSN: 0256-307X; 1741-3540

Angular distributions of the ^7Li（^6Li, ^6Li）^7Li elastic scattering and the ^7Li（^6Li, ^7Lig.s.）^6Li, ^7Li（^6Li, ^7Li0.48）^6Li transfer reactions at Ec.m. = 23.7 MeV are measured with the Q3D magnetic spectrograph. The optical potential of ^6Li ＋ ^7Li is obtained by fitting the elastic scattering differential cross sections. Based on the distorted wave Born approximation （DWBA） analysis, spectroscopic factors of ^7Li =^6Li n are 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 ^6 Li（n, γ0,1）^7 Li direct neutron capture reactions and the astrophysical ^6Li（n, γ）^7 Li reaction rates are derived.