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Exploration of magnetic field generation of H32+ by direc ionization and coherent resonant excitation |
| Zhi-Jie Yang(杨志杰), Qing-Yun Xu(徐清芸), Yong-Lin He(何永林), Xue-Shen Liu(刘学深), and Jing Guo(郭静)† |
| Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China |
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Abstract Coherent electronic dynamics are of great significance in photo-induced processes and molecular magnetism. We theoretically investigate electronic dynamics of triatomic molecule H32+ by circularly polarized pulses, including electron density distributions, induced electronic currents, and ultrafast magnetic field generation. By comparing the results of the coherent resonant excitation and direct ionization, we found that for the coherent resonant excitation, the electron is localized and the coherent electron wave packet moves periodically between three protons, which can be attributed to the coherent superposition of the ground A' state and excited E+ state. Whereas, for the direct single-photon ionization, the induced electronic currents mainly come from the free electron in the continuum state. It is found that there are differences in the intensity, phase, and frequency of the induced current and the generated magnetic field. The scheme allows one to control the induced electronic current and the ultrafast magnetic field generation.
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Received: 08 March 2021
Revised: 11 May 2021
Accepted manuscript online: 20 May 2021
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PACS:
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32.80.-t
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(Photoionization and excitation)
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32.90.+a
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(Other topics in atomic properties and interactions of atoms with photons)
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42.25.Kb
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(Coherence)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12074146 and 12074142). |
Corresponding Authors:
Jing Guo
E-mail: gjing@jlu.edu.cn
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Cite this article:
Zhi-Jie Yang(杨志杰), Qing-Yun Xu(徐清芸), Yong-Lin He(何永林), Xue-Shen Liu(刘学深), and Jing Guo(郭静) Exploration of magnetic field generation of H32+ by direc ionization and coherent resonant excitation 2021 Chin. Phys. B 30 123203
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