Indirect Measurement of Astrophysical ^(13)C(α,n)^(16)O S-Factors  

作　　者：郭冰 李志宏 李云居 苏俊 白希祥 陈永寿 樊启文 金孙均 李二涛 李志常 连钢 刘鑫 刘建成 舒能川 王宝祥 王友宝 颜胜权 曾晟 柳卫平 庞丹阳 M. LUGARO J. BUNTAIN 

机构地区：[1]China Institute of Atomic Energy [2]School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University [3]Center for Stellar and Planetary Astrophysics,Monash University

出　　处：《Plasma Science and Technology》2012年第5期357-359,共3页等离子体科学和技术（英文版）

基　　金：supported by National Basic Research Program of China (No.2007CB815003);National Natural Science Foundation of China(Nos.10705053,11021504,10720101076,10735100 and 10975193)

摘　　要：The 13^C（a, n）160 reaction is believed to be the main neutron source reaction for the s-process in asymptotic giant branch （AGB） stars. The astrophysical S-factors of this reaction have been determined based on an evaluation of the a spectroscopic factor of the 1/2＋ subthreshold state in 17^O （Ex = 6.356 MeV） by using the 13^C（11^B, 7^Li）17^O a transfer reaction. Our result confirms that the 1/2＋ subthreshold resonance is dominant for the 13^C（a, n）16^O reaction at low energies of astrophysical interest.The 13^C（a, n）160 reaction is believed to be the main neutron source reaction for the s-process in asymptotic giant branch （AGB） stars. The astrophysical S-factors of this reaction have been determined based on an evaluation of the a spectroscopic factor of the 1/2＋ subthreshold state in 17^O （Ex = 6.356 MeV） by using the 13^C（11^B, 7^Li）17^O a transfer reaction. Our result confirms that the 1/2＋ subthreshold resonance is dominant for the 13^C（a, n）16^O reaction at low energies of astrophysical interest.

关 键 词：transfer reaction elastic scattering S-PROCESS 

分 类 号：P14[天文地球—天体物理]