Excitation and Ionization in Atomic Collision Processes--General Theory and Accurate Numerical Calculations

这项研究的目的是研究电子和正电子与原子的基本相互作用。对自旋相关效应、相干和关联现象给予了特别关注。该项目由两个相关部分组成：第一，简化密度矩阵形式被用来根据一些定义良好的、可测量的参数来系统地描述碰撞过程，第二，基于微扰(扭曲波)和非微扰(R-矩阵)技术的数值计算被用来预测这些参数。

The object of this study is to examine fundamental interactions of electrons and positrons with atoms. Special attention is given to spin dependent effects, coherence and correlation phenomena. The project consists of two related parts; first, the reduced density matrix formalism is used to provide a systematic description of collision processes in terms of a few well defined, measurable parameters, and second, numerical calculations based on perturbative (Distorted Wave) and non- purturbative (R-matrix) techniques are used to predict these parameters.