| ATOMIC AND MOLECULAR PHYSICS |
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Single- and Double-Electron Capture Processes in Low-Energy Collisions of N$^{4+}$ Ions with He |
| Kun Wang1, Xiao-Xia Wang1, Yi-Zhi Qu1**, Chun-Hua Liu2, Ling Liu3, Yong Wu3, Robert J. Buenker4 |
1College of Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049
2School of Physics, Southeast University, Nanjing 210094
3Data Center for High Energy Density Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088
4Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universitat Wuppertal, D-42097 Wuppertal, Germany
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| Cite this article: |
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Kun Wang, Xiao-Xia Wang, Yi-Zhi Qu et al 2020 Chin. Phys. Lett. 37 023401 |
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Abstract We investigate the electron capture processes of N$^{4+}$(1$s^{2}2s$) colliding with He(1$s^{2}$) in the energy range of 10–1700 eV/amu using the quantum-mechanical molecular-orbital close-coupling (QMOCC) method. Total and state-selective single-electron capture and double-electron capture (SEC and DEC) cross sections are obtained and compared with other available studies. The results agree better with the experimental data in both trend and magnitude when the electron translation factor (ETF) effects are included. Our results indicate that both the SEC and DEC processes play important roles in the considered energy region. For the SEC processes, the N$^{3+}$(1$s^{2}2p^{2}$) + He$^{+}$(1$s$) states are the dominant capture states, and the N$^{2+}$(1$s^{2}2s2p^{2}$) + He$^{2+}$ states are the main DEC states.
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Received: 13 November 2019
Published: 18 January 2020
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| PACS: |
34.70.+e
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(Charge transfer)
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34.20.-b
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(Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos. 11774344, 11474033 and 11574326, and the National Key Research and Development Program of China under Grant No. 2017YFA0402300. |
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