大能量损失几何条件下末态屏蔽效应和交换效应的理论研究  

A theoretical study on final channel screening and exchange effects in large energy loss geometry

作　　者：杨欢[1,2] 张穗萌[2] 吴兴举[2] 

机构地区：[1]皖西学院基础实验中心,六安237012 [2]皖西学院数理系,原子与分子物理研究所,六安237012

出　　处：《物理学报》2009年第10期6938-6945,共8页Acta Physica Sinica

基　　金：安徽省教育厅重大科研项目基金(批准号:ZD2007002-1)资助的课题~~

摘　　要：用BBK(Brauner,Briggs,Klar)模型和修正后的BBK模型在大的能量损失几何条件下对氦原子的三重微分散射截面进行了理论计算和研究,并把计算结果与Catoire等的实验测量结果以及Stevenson等的最新实验测量结果进行了比较,对作者早期文章的理论推论进行了验证,并对交换效应作了系统的研究.The triple differential cross sections for electron impact ionization of helium in the special geometry of coplanar large energy loss are calculated by using the BBK model and the modified BBK model.The calculated results are compared with the experimental results of Catoire and the present experimental results of Stevenson.The previous theoretical deduction is proved and the exchange effects are analyzed and discussed.

关 键 词：BINARY峰 RECOIL峰 屏蔽效应 交换效应 

分 类 号：O562[理学—原子与分子物理]