低电荷态离子原子碰撞过程中的转移电离机理的研究  

The transfer ionization mechanism in the low charge state ion-atom collisions

作　　者：刘玉文[1] 陈熙萌[1] 邵剑雄[1] 丁宝卫[1] 付宏斌[1] 崔莹[1] 张红强[1] 鲁彦霞[1] 高志民[1] 杜娟[1] 陈林[1] 孙光智[1] 尹永智[1] 于得洋 蔡晓红 

机构地区：[1]兰州大学核科学与技术学院,兰州730000

出　　处：《物理学报》2008年第5期2913-2918,共6页Acta Physica Sinica

基　　金：国家重点基础研究前期专项基金(批准号:2002CCA00900);国家自然科学基金(批准号:10304019)资助的课题~~

摘　　要：介绍了使用位置灵敏技术和飞行时间方法研究中低能低电荷态离子-原子碰撞过程中转移电离与单电子俘获过程.对于确定的入射离子电荷态,通过理论分析及与实验数据对比给出了转移电离与单电子俘获截面比RTS随着入射离子速度VP的变化规律和转移电离过程中电离的电子主要来自靶原子的最外亚壳层.In this work, the ionizations involving the charge transfer and single capture processes in low charge state ion-atom collisions in low-to-medium energy region, are investigated by the position sensitive and time-of-flight techniques. For a given charge state of the incoming projectiles, the dependence of the ratio RTS of the transfer ionization to the single capture changing with the projectile velocity is obtained, and the conclusion that the ionized electron in the transfer ionization process comes from the outermost sub-shell of the target atom is confirmed by comparing our theoretical results with the experimental data.

关 键 词：转移电离 逃离半径 电离半径 俘获半径 

分 类 号：O562.5[理学—原子与分子物理] O571.6[理学—物理]