Electron-impact ionization of W^(9+)and W^(10+)  

作　　者：鲍润家 魏军奎 陈雷 李博文 陈熙萌 Runjia Bao;Junkui Wei;Lei Chen;Bowen Li;Ximeng Chen(School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China

出　　处：《Chinese Physics B》2023年第6期226-235,共10页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11404152);Fundamental Research Funds for the Central Universities(Grant No.lzujbky2017-94)。

摘　　要：Electron-impact single-ionization(EISI)cross sections for W^(q+)(q=9,10)ions have been calculated by using the level-to-level distorted-wave(LLDW)method with emphasis on the contribution of metastable states to the total ionization cross sections.Contributions from direct-ionization(DI)and excitation-autoionization(EA)processes are taken into account.The calculated cross sections include the contributions from both the ground configuration and the long-lived metastable states with lifetimes exceeding 10^(-6)s.Calculated cross sections are in good agreement with experimental measurements when the influence of metastable states on the total ionization cross section are well considered.

关 键 词：tungsten ions electron-impact ionization relativistic distorted-wave method metastable states 

分 类 号：O562.4[理学—原子与分子物理]