| Electron-impact ionization cross section calculations for lithium-like ions |
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| 作者姓名： | 卞国杰 张稚卿 黄克宁 武晨晟 程勇军 王凯 吴勇 |
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| 作者单位： | National Key Laboratory of Computational Physics;Department of Physics;Institute of Atomic and Molecular Physics;School of Physics and Information Technology;Hebei Key Laboratory of Optic-electronic Information and Materials;HEDPS |
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| 基金项目： | the National Natural Science Foundation of China(Grant Nos.11934004 and U1832201);the Science Challenge Project(Grant No.TZ2016005);the CAEP Foundation(Grant No.CX2019022). |
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| 摘 要： | The electron-impact ionization of lithium-like ions C3+,N4+,O5+,Ne7+,and Fe23+is studied using a combination of two-potential distorted-wave and R-matrix methods with a relativistic correction.Total cross sections are computed for incident energies from 1 to 10 times of ionization energy and better agreements with the experimental results are obtained in comparison with the theoretical data available.It is found that the indirect ionization processes become significant for the incident energy larger than about four times of the ionization energy.Contributions from the exchange effects along the isoelectronic sequence are also discussed and found to be important.The present method can be used to obtain systematic ionization cross sections for highly charged ions across a wide incident energy range.
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| 关 键 词： | total cross sections electron-impact ionization excitation-autoionization distorted-wave |
| 收稿时间： | 2021-07-06 |
Electron-impact ionization cross section calculations for lithium-like ions |
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| Guo-Jie Bian,Jyh-Ching Chang,Ke-Ning Huang,Chen-Sheng Wu,Yong-Jun Cheng,Kai Wang,Yong Wu.Electron-impact ionization cross section calculations for lithium-like ions[J].Chinese Physics B,2022,31(1):13401-013401. |
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| Authors: | Guo-Jie Bian Jyh-Ching Chang Ke-Ning Huang Chen-Sheng Wu Yong-Jun Cheng Kai Wang Yong Wu |
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| Institution: | (National Key Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088,China;Department of Physics,National Tsing Hua University,Hsinchu 300,China;Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China;School of Physics and Information Technology,Shaanxi Normal University,Xi'an 710119,China;Hebei Key Laboratory of Optic-electronic Information and Materials,The College of Physics Science and Technology,Hebei University,Baoding 071002,China;HEDPS,Center for Applied Physics and Technology,and College of Engineering,Peking University,Beijing 100871,China) |
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| Abstract: | The electron-impact ionization of lithium-like ions C3+, N4+, O5+, Ne7+, and Fe23+ is studied using a combination of two-potential distorted-wave and R-matrix methods with a relativistic correction. Total cross sections are computed for incident energies from 1 to 10 times of ionization energy and better agreements with the experimental results are obtained in comparison with the theoretical data available. It is found that the indirect ionization processes become significant for the incident energy larger than about four times of the ionization energy. Contributions from the exchange effects along the isoelectronic sequence are also discussed and found to be important. The present method can be used to obtain systematic ionization cross sections for highly charged ions across a wide incident energy range. |
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| Keywords: | total cross sections electron-impact ionization excitation-autoionization distorted-wave |
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