Theoretical studies of proton capture reactions in A～25 proton-rich nuclei  

作　　者：QI Chong DU RenZhong GAO Yang ZHU JianYu XU FuRong 

机构地区：[1]School of Physics,and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China [2]Center for Theoretical Nuclear Physics,National Laboratory for Heavy Ion Physics,Lanzhou 730000,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2009年第10期1464-1470,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：Supported by the Major State Basic Research Development Program (Grant No.2007CB815000);the National Natural Science Foundation of China (Grant Nos.10525520,10735010,10875172,and J0730316);the Mao Yu-Gang Scientific Research Foundation

摘　　要：The direct proton capture and resonance proton capture properties of stellar reactions 22Mg(p,γ)23Al and 26Si(p,γ)27P are studied by employing a mean-field potential obtained from the Skyrme-Hartree-Fock(SHF) model.Calculations with the SHF potential reproduce well the loosely-bound structure of the ground states as well as the widths of the resonant states in these nuclei.With the obtained potential we estimate the reaction rates of direct proton capture and resonance proton capture to nuclei 23Al and 27P.The effect of the 27P loosely-bound structure on the S factor of the direct proton capture is also discussed.The direct proton capture and resonance proton capture properties of stellar reactions 22Mg(p,γ)23Al and 26Si(p,γ)27P are studied by employing a mean-field potential obtained from the Skyrme-Hartree-Fock (SHF) model. Calculations with the SHF potential reproduce well the loosely-bound structure of the ground states as well as the widths of the resonant states in these nuclei. With the obtained potential we estimate the reaction rates of direct proton capture and resonance proton capture to nuclei 23Al and 27P. The effect of the 27P loosely-bound structure on the S factor of the direct proton capture is also discussed.

关 键 词：PROTON CAPTURE REACTION mean field potential proton-rich NUCLEI SHELL model 

分 类 号：O571[理学—粒子物理与原子核物理]