%0 Journal Article
%T Triply differential cross-sections for single ionization of sodium by electron impact in doubly symmetric geometry<br>共面双对称几何条件下电子碰撞Na原子单电离的三重微分截面
%A Sun Shi-Yan
%A Jia Xiang-Fu
%A Miao Xiang-Yang
%A Li Xia
%A Ma Xiao-Yan
%A <br>孙世艳
%A 贾祥富
%A 苗向阳
%A 李霞
%A 马晓艳
%J 物理学报
%D 2012
%I 
%X Dynamically screened three-Coulomb-wave model (DS3C) is used to study the single ionization of the 3S orbital of sodium by electron impact. Triply differential cross-sections (TDCSs) are calculated in doubly symmetric geometry at excess energies of 6, 10, 15, 20, 30, 40, 50 and 60 eV using a parameterized optimized effective potential. Comparisons are made between recently experimental data and theoretical predictions of the three-Coulomb wave function (3C) approach and distorted-wave Born approximation (DWBA). The angular distribution of the present TDCS is found to qualitatively reproduce the reported experimental data. It is shown that dynamically screened effects are important in this geometry.
%K dynamically screening effects
%K single ionization
%K triply differential cross section<br>动力学屏蔽
%K 单电离
%K 三重微分截面
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=78F360FC29C47911FAB29F4CE06C8825&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=9CF7A0430CBB2DFD&sid=067CF9A11705B5CF&eid=F2D6283A17B58F38&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=12