低能非裸核高离化态离子与氢原子碰撞的电子俘获  

ELECTRON CAPTURE BY IMPACT OF HIGHLY PARTIALLY STRIPPED IONS ON HYDROGEN ATOM IN LOW COLLISION ENERGIES

作　　者：周效信[1,2] 李白文[1,2] 

机构地区：[1]中国科学院武汉物理研究所波谱与原子分子物理开放实验室 [2]西北师范大学物理系

出　　处：《原子与分子物理学报》1998年第3期315-322,共8页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金

摘　　要：基于单通道ＬａｎｄａｕＺｅｎｅｒ模型给出的电子俘获的反应窗口，分析了低能裸核离子与氢原子碰撞和非裸核离子与氢原子碰撞的电子俘获过程。结果表明：如果初、末态间的非绝热势能曲线的交点落在相应的反应窗口内，则多通道ＬａｎｄａｕＺｅｎｅｒ方法仍然能够给出较好的结果。用该方法对低能Ｃ３＋＋Ｈ，Ｃ４＋＋Ｈ和Ｏ５＋＋Ｈ碰撞的电子俘获截面进行了计算，其结果与我们的分析是一致的。ased on the reaction windows of electron capture obtained by using the twostate LandauZener model, the electron capture processes in collision of bare ions and highly partially stripped ions with hydrogen atoms are analysed. The capture cross sections predicted by multichannel LandauZener method are reliable if the corss points between the initial and final diabatic potential energy curves are located in the corresponding reaction windows. Our calculations by the multichannel LandauZener method show that the present theoretical results are in accord with our analyses for slow C3++H and O5++H collisions.

关 键 词：电子俘获 截面 氢原子碰撞 低能 高离化态 

分 类 号：O562.5[理学—原子与分子物理]