摘要
利用初态程函近似-连续扭曲波方法(CDW-EIS)研究了质子与B原子的碰撞电离过程。计算了入射粒子能量分别为100keV/u,1 000keV/u,10 000keV/u情况下的1s、2s、2p分波电离二阶微分截面及其总的二阶微分散射截面。并利用计算结果详细讨论和分析了软碰撞(SC)、电子俘获到入射粒子连续态(ECC)和两体相遇碰撞(BE)的碰撞电离机理,并对各分波二阶微分散射截面进行了比较。
The H++ B impact ionization process is investigated by using a continuum distorted wave method with the eikonal initial state (CDW--EIS) approximation. Double differential cross section for 1s, 2s and 2p is calculated for projectile energies 100keV/u, 1 000keV/u, 10 000keV/u respectively. Based on the calculation result, this paper discusses and analyzes in detail the soft collision (SC), electron capture to the incident ion continuum (ECC) and the two--body collision encounter (BE) impact ionization mechanisms. It also compares the double differential cross section of each partial wave.
出处
《嘉兴学院学报》
2011年第6期47-50,103,共5页
Journal of Jiaxing University
基金
国家自然科学基金项目(11005049
10974021
10979007)
关键词
重离子碰撞电离
初态程函近似-连续扭曲波方法
二阶微分散射截面
heavy particle impact ionization
continuum distorted wave- eikonal initial approximation
double differential cross section