入射电子被中性原子散射过程中的库仑波描述  

The coulomb describing for the incident electron scattering from neutral atoms

作　　者：张穗萌[1] 张玉[1] 吴兴举[1] 宋军[1] 

机构地区：[1]安徽皖西学院数理系原子与分子物理研究所,六安237012

出　　处：《原子与分子物理学报》2006年第B04期119-122,共4页Journal of Atomic and Molecular Physics

基　　金：安徽省自然科学基金（03406203）,省高校拔尖人才专项基金（[2003]022）共同资助的课题.

摘　　要：在前期工作的基础上，培出了有效电荷Zeff的解析形式．研究发现：有效电荷Zeff与入射电子的能量和散射角有关．当入射电子处在有效电荷库仑场的情形下，我们计算了电子入射高化氯原子的三重微分截面，并发现现有的理论计算与实验结果很好的一致．Based on our earlier paper,an effective charge Z_eff can be shown analytically.It has been found that an effective charge Z_eff depends on the scattering angle and incident energy of the incoming electron.A major limitation of our earlier paper lin in the fact that analytic plane waves were used for the incident electron and analytic Coulomb waves were used for the two final-state electrons.The important difference between our earlier paper and present wave functions lies in the fact that the present initial target wave functions include short-rang effects of screeing by the atomic electrons while our earlier paper do not.For the case of helium,the present final-state wave functions are the same as those used by our earlier paper.We compute the triple differential cross section for electron impact ionization atomic helium using Coulomb waves with an effective charge for the incoming electron and find very agreement with experiment and with previous calculations.

关 键 词：初通道 库仑波 有效电荷 

分 类 号：O561.5[理学—原子与分子物理]