%0 Journal Article
%T Theoretical study of cross sections of excitation and ionization for electron-ion impact in average-atomic model<br>含温有界原子模型下电子与离子碰撞激发和电离截面的理论研究
%A Tian Ming-Feng
%A Meng Xu-Jun
%A Zhu Xi-Rui
%A Jiang Min-Hao
%A Wang Zhi-Gang
%A <br>田明锋
%A 孟续军
%A 朱希睿
%A 姜旻昊
%A 王志刚
%J 物理学报
%D 2005
%I 
%X 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.
%K average-atomic model
%K distorted-wave Born exchange approximation
%K ionization cross section<br>平均原子模型
%K 扭曲波波恩交换近似
%K 电离截面
%K 等离子体
%K 电子碰撞
%K 碰撞激发
%K 理论研究
%K 有界
%K 密度效应
%K 近似方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=7F4B5FEE5240235A&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=F3090AE9B60B7ED1&sid=10AE12522D93AF03&eid=F7DB3F5BE3F4A21C&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=17