Re-evaluation of the ^23Mg（p,γ） ^24Al reaction rate  

作　　者：刘宏林 刘门全 赖祥军 罗志全 

机构地区：[1]Institute of Theoretical Physics, China West Normal University, Nanchong, Sichuan 637002, China

出　　处：《Chinese Physics B》2007年第6期1637-1640,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 10347008）.

摘　　要：Based on a new screening Coulomb model, this paper discusses the effect of electron screening on proton capture reaction of 23Mg. The derived result shows that, in some considerable range of stellar temperatures, the effect of electron screening on resonant reaction is prominent; on the non-resonant reaction the effect is obvious only in the low stellar temperatures. The reaction rates of ^23Mg（p,γ） ^24Al would increase 15%-25% due to the fact that the electron screening are considered in typical temperature range of massive mass white dwarfs, and the results undoubtedly affect the nucleosynthesis of some heavier nuclei in massive mass white dwarfs.Based on a new screening Coulomb model, this paper discusses the effect of electron screening on proton capture reaction of 23Mg. The derived result shows that, in some considerable range of stellar temperatures, the effect of electron screening on resonant reaction is prominent; on the non-resonant reaction the effect is obvious only in the low stellar temperatures. The reaction rates of ^23Mg（p,γ） ^24Al would increase 15%-25% due to the fact that the electron screening are considered in typical temperature range of massive mass white dwarfs, and the results undoubtedly affect the nucleosynthesis of some heavier nuclei in massive mass white dwarfs.

关 键 词：electron screening thermonuclear reaction NUCLEOSYNTHESIS stellar evolution 

分 类 号：P148[天文地球—天体物理]