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Charge transfer processes in low-energy Na+-Na collisions |
| Cheng-Cheng Jiang(蒋承呈)1, Xiao-Xia Wang(王小霞)1,†, Kun Wang(王堃)2, Yi-Zhi Qu(屈一至)3, Jian-Guo Wang(王建国)4, Xia Li(李侠)1, Li Ma(马丽)1, and Robert J. Buenker5 |
1 College of Physics, Chengdu University of Technology, Chengdu 610059, China;
2 Institute of Environmental Science, Shanxi University, Taiyuan 030006, China;
3 College of Material Sciences and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China;
4 Data Center for High Energy Density Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
5 Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universitat Wuppertal, D-42097 Wuppertal, Germany |
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Abstract A comprehensive theoretical study of resonant and non-resonant charge transfer processes in the homonuclear Na$^+$ $+$ Na(3s) collision system is provided. The electronic structure of the quasi-molecular system is calculated using the multireference single- and double-excitation configuration interaction (MRD-CI) method under both one-electron (OEM) and thirteen-electron (TEM) models. The radial and rotational coupling matrix elements are obtained with careful inclusion of electron translation factors (ETFs). Based on these data, fully quantum-mechanical scattering calculations were performed using the fully quantum-mechanical molecular orbital close-coupling (QMOCC) method to derive state-selective and total cross sections for electron capture over a broad energy range (0.2-5600 eV/amu). The calculated resonant charge-transfer cross sections show excellent agreement with available theoretical and experimental results. Non-resonant processes, which involve electron capture into excited states of Na$^+$, are found to become increasingly important above several keV/amu. This work provides the first theoretical predictions for non-resonant state-selective cross sections in this system, offering a valuable reference for future experimental and theoretical studies in atomic collision physics.
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Received: 07 August 2025
Revised: 11 October 2025
Accepted manuscript online: 22 October 2025
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PACS:
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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: This paper was supported by the National Natural Science Foundation of China (Grant Nos. 11774344, 12204288, and 12504293). |
Corresponding Authors:
Xiao-Xia Wang
E-mail: wangxx@cdut.edu.cn
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Cite this article:
Cheng-Cheng Jiang(蒋承呈), Xiao-Xia Wang(王小霞), Kun Wang(王堃), Yi-Zhi Qu(屈一至), Jian-Guo Wang(王建国), Xia Li(李侠), Li Ma(马丽), and Robert J. Buenker Charge transfer processes in low-energy Na+-Na collisions 2026 Chin. Phys. B 35 043402
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