电子与氢及其同位素分子碰撞的非解离性电离截面研究  

Cross sections for the electron impact non-dissociative ion of hydrogen and its isotopic molecule

作　　者：何曼丽[1] 王晓[1] 高思峰[1] 

机构地区：[1]解放军理工大学理学院,南京210007

出　　处：《物理学报》2012年第4期191-195,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:03053751);解放军理工大学理学院基金(批准号:QN-WL-2009-02)资助的课题~~

摘　　要：在边界等离子体中,氢及其同位素分子与高能电子碰撞可发生电离反应.对于尚无可利用的氢及其同位素分子的电子碰撞非解离性电离反应截面,基于莫尔斯函数、弗兰克-康登原理,采用半经典的Gryzinski方法进行了计算.得到反应截面随电子能量的变化情况以及振动能级对反应截面的影响.计算结果表明分子的振动激发对电离反应有着显著影响.In the edge plasma,hydrogen and its isotopic molecule will be ionized via collisions with the energetic electrons in the plasmas. The cross section data for the electron impact non-dissociative ion of the hydrogen and its isotopic molecule,which are unavailable from the literature are calculated on the basis of Morse potential function,Franck-Condon theory and semi-classical Gryzinski method. The change of cross section with electron energy and the effect of vibrational level of ground state on the cross section are presented in the paper.The results show that the vibrational excitation plays an important role in the process of ion.

关 键 词：电离 截面 半经典Gryzinski方法 

分 类 号：O561.5[理学—原子与分子物理]