INTEGRATION OF FREE FREE RADIATIVE-TRANSITION MATRIX-ELEMENTS

被引：11
|
作者：
VACKAR, J
SIMUNEK, A
SIPR, O
机构：
[1] Institute of Physics, Czechoslovakian Academy of Sciences, Na Slovance 2
来源：
COMPUTER PHYSICS COMMUNICATIONS | 1991年 / 66卷 / 2-3期
关键词：
D O I：
10.1016/0010-4655(91)90074-U
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The calculation of radiative-transition matrix elements between continuum states of an electron moving in the finite-range spherical potential is concerned in this paper. We introduce a numerically safe and fast procedure which has been developed for this purpose. The numerical integration is employed within a certain finite region and the analytical integration outside. Both are performed by the computer program and the algorithm is presented here. Special care was given to the numerical stability so that the rapidly oscilating wave functions describing high-energy incident electrons (approximately 5 keV) may be integrated. The higher-order terms of the multipole expansion can be evaluated by this method, too.
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页码：259 / 265
页数：7
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