Al，Ti，Cu，Mo原子的K壳层电离截面的理论计算

Computation of electron impact K-shell ionization cross sections of Al,Ti,Cu and Mo atoms

电子离子碰撞过程是模拟激光等离子体的超热电子的能谱和产额的主要过程之一。基于相对论性的电子离子碰撞的K壳层的电离截面理论,计算了Al,Ti,Cu,Mo原子的K壳层的电子离子碰撞截面,结果和最近的文献实验数值和其它理论数值进行了比较,计算结果可用来模拟激光等离子体的超热电子能谱和产额。

The total cross sections of electron impact single K-shell ionization of atomic targets Al, Ti, Cu and Mo, with a wide range of atomic numbers from 11 to 42, are evaluated in the energy range up to about 1 MeV employing the relativistic correction method ,Which incorporates the ionic and relativistic effects. The experimental cross sections for all targets are reproduced satisfactoryily in the considered energies. Bethe K-shell-ionlzation cross sections are in good agreement with the experimental data and other theoretical data at high energies. The relativistic effect is found to be significant in Mo targets.