New determination of the^7Be ground state spectroscopic factor and the^6Li(p,γ)^7Be astrophysical S(E)factors  

作　　者：Zhi-Hong LI Er-Tao Li Jun Su Yun-Ju Li You-Bao Wang Sheng-Quan Yan Bing Guo Ding Nan Wei-Ping Liu 李志宏;李二涛;苏俊;李云居;王友宝;颜胜权;郭冰;南丁;柳卫平(China Institute of Atomic Energy, Beijing 102413, China;College of Physics and Energy, Shenzhen University, Shenzhen 518060, China)

机构地区：[1]China Institute of Atomic Energy,Beijing 102413,China [2]College of Physics and Energy,Shenzhen University,Shenzhen 518060,China

出　　处：《Chinese Physics C》2018年第6期110-113,共4页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11375269,11490563,11505117);Natural Science Foundation of Guangdong Province(2015A030310012);National Basic Research Program of China(2013CB834406);National Key Research and Development Program of China(2016YFA0400502)

摘　　要：The ＇lithium problem, in Big Bang nucleosynthesis（BBN） has recently focused on reactions involving ^7 Be.The ^6 Li（p,γ）^7 Be reaction can provide us not only with information about ^6 Li destruction but also with information about ^7 Be production. In the present work, the proton spectroscopic factor in ^7 Be is extracted to be 0.70 ± 0.17 from the angular distribution of ^7 Be（d, ^3 He）^6 Li at Ec.m. = 6.7 MeV. This value is then used to compute the direct component of the astrophysical ^6 Li（p,γ）^7 Beg.s. S（E） factors and determine the resonance parameters from the total S（E） factors.The ＇lithium problem, in Big Bang nucleosynthesis（BBN） has recently focused on reactions involving ^7 Be.The ^6 Li（p,γ）^7 Be reaction can provide us not only with information about ^6 Li destruction but also with information about ^7 Be production. In the present work, the proton spectroscopic factor in ^7 Be is extracted to be 0.70 ± 0.17 from the angular distribution of ^7 Be（d, ^3 He）^6 Li at Ec.m. = 6.7 MeV. This value is then used to compute the direct component of the astrophysical ^6 Li（p,γ）^7 Beg.s. S（E） factors and determine the resonance parameters from the total S（E） factors.

关 键 词：big bang nucleosynthesis spectroscopic factor proton radioactive capture reaction 

分 类 号：P14[天文地球—天体物理] TS933.21[天文地球—天文学]