摘要
在分析当前描述离子与原子碰撞的经典理论模型的基础上，详细讨论了处理多电子激发态自电离衰变问题的一些新的思路，把高电荷态离子与原子碰撞反应中的电子转移过程分为四阶段描述，并依据能量守恒原理，规范了处理多电子激发态离子发生自电离衰变的规则，自洽地解决碰撞中间过程中俘获多电子后的离子发生自电离向末态衰变的问题。
In this paper, four steps are suggested in describing highly charged ion-atom collisions based on the Molecular Coulombic overBarrier Model(MCBM): molecularizing of target electron→formation of molecular→dissociation of the molecular and formation of multiply excited scattered ions and recoil ions →autoionizing decay of multiply excited ions. An autoionizing scheme for multiply excited ions is proposed to complement the MCBM predictions. It was found that the calculated absolute projectile charge changing cross sections are in good agreements with experimental results.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
1999年第2期203-210,共8页
Journal of Atomic and Molecular Physics
基金
国家自然科学基金
中国科学院"九五"重点基础性研究资助项目
关键词
离子
原子碰撞
多电子激发态
自电离衰变
Ion-atom collision
Multiply excited states
Autoionizing decay
