解相对论Dirac方程计算低能电子弹性散射截面的分波法  

PARTIAL WAVE METHOD FOR CALCULATING ELASTICSCATTERING CROSS SECTION OF LOW ENERGY ELECTRONBY SOLVING RELATIVISTIC DIRAC EQUATION

作　　者：谭震宇[1] 何延才[2] 

机构地区：[1]山东工业大学电力系电工研究室,济南250014 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《计算物理》1993年第2期239-245,共7页Chinese Journal of Computational Physics

基　　金：国家自然科学基金

摘　　要：本文给出一个基于解相对论Dirac方程计算低能电子弹性散射截面的方法,比较Thomas-Fermi-Dirac(TFD)势及Hartree-Fock(HF)势对散射截面计算的影响,计算了C、Al、Cu、Ag、Au等多种元素在0.01～10keV能量范围的弹性散射截面,比较分析Mott模型、Pendry模型以及屏蔽的Rutherford截面之间的差异。In this paper, a method for calculating elastic scattering cross section of low energy electron based on solving relativistic Dirac equation is given, the cross sections calculated by applying Thomas-Fermi-Dirac (TFD) potential and Hartree-Fock (HF )potential respectively are compared, the cross sections of elements C, Al, Cu, Ag, Au are calculated, the differences between Mott model. Pendry model and Rutherford formula are also compared and analysed.

关 键 词：电子 散射截面 狄喇克方程 分波 

分 类 号：O484[理学—固体物理]