Electron-impact ionization of W9+ and W10+

被引：3
|
作者：
Bao, Runjia [1 ]
Wei, Junkui [1 ]
Chen, Lei [1 ]
Li, Bowen [1 ]
Chen, Ximeng [1 ]
机构：
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
来源：
CHINESE PHYSICS B | 2023年 / 32卷 / 06期
基金：
中国国家自然科学基金;
关键词：
tungsten ions; electron-impact ionization; relativistic distorted-wave method; metastable states;
D O I：
10.1088/1674-1056/aca14d
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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.
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页数：10
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