氢离子与里德伯原子碰撞中的电荷转移过程  

Atom-orbital close-coupling calculation of charge exchange processes in collisions of H^+ with Li(5d)

作　　者：赵益清[1] 刘玲[2] 刘春雷[2] 薛平[1] 王建国[2] 

机构地区：[1]清华大学物理系原子分子纳米科学教育部重点实验室,北京100084 [2]北京应用物理与计算数学研究所计算物理实验室,北京100088

出　　处：《物理学报》2009年第5期3248-3254,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10676014,10574018,10574020和90508001);国家863高技术专业委员会惯性约束聚变主题;教育部重点实验室项目(批准号:306020)资助的课题~~

摘　　要：应用双中心原子轨道强耦合方法研究了H+与里德伯态原子Li(5d)碰撞的电荷转移过程,计算了电子转移到氢原子各个n,l壳层(这里n为主量子数,l为角量子数)的态选择截面.结果发现,电荷转移的末态主要分布在与初态电子能量5d接近的n=4—7能级,该分布随碰撞能量的变化不大;但俘获末态的l分布对入射离子能量很敏感:在1keV左右的低能时主要分布在高l的末态,随着碰撞能量增加峰值逐渐向低l方向移动,并在l=1左右达到峰值.The charge exchange process in collisions of H^＋ with Li （Sd） is investigated using the two-center atomic-orbital closecoupling method. The state-selective cross-sections are obtained in the energy range of 0.5-10 keV. It is found that the processes for capture to n = 4-7 are the dominant reactions, and the n-distribution of state-selective cross-sections is weakly dependent on the collision energy. But the l-distribution of state-selective cross-sections strongly depends on the collision energy. For the lower collision energy around 1 keV, the l-distribution increases with increasing l. However, the l-distribution moves to the lower quantum number as the collision energy increases, and the maximum value appears around l = 1.

关 键 词：电子俘获过程 双中心原子轨道强耦合方法 态选择截面 

分 类 号：O562.5[理学—原子与分子物理] O641.4[理学—物理]