Theoretical study of cross sections of excitation and ionization for electron-ion impact in average-atomic model

被引：3
|
作者：
Tian, MF [1 ]
Meng, XJ [1 ]
Zhu, XR [1 ]
Jiang, MH [1 ]
Wang, ZG [1 ]
机构：
[1] Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China
来源：
ACTA PHYSICA SINICA | 2005年 / 54卷 / 10期
关键词：
average-atomic model; distorted-wave Born exchange approximation; ionization cross section;
D O I：
10.7498/aps.54.4673
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By using a distorted-wave Born exchange approximation method in averaged-atomic model, we calculated the direct excitation and direct ionization cross sections of several ions in plasmas. The ionization cross sections of ions at different temperatures or different plasma densities are systematically studied. It is found that due to the shift of the energy levels produced by the effects of the temperature and the density of plasma, the ionization cross sections of ions in plasmas are rather different from those of free atoms.
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收藏
页码：4673 / 4679
页数：7
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