Exploration of magnetic field generation of H32+ by direc ionization and coherent resonant excitation

doi:10.1088/1674-1056/ac0346

中国物理B ›› 2021, Vol. 30 ›› Issue (12): 123203-123203.doi: 10.1088/1674-1056/ac0346

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

收稿日期:2021-03-08 修回日期:2021-05-11 接受日期:2021-05-20 出版日期:2021-11-15 发布日期:2021-12-01
通讯作者: Jing Guo E-mail:gjing@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12074146 and 12074142).

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

Received:2021-03-08 Revised:2021-05-11 Accepted:2021-05-20 Online:2021-11-15 Published:2021-12-01
Contact: Jing Guo E-mail:gjing@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12074146 and 12074142).

摘要/Abstract

摘要： 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.

关键词: ultrafast magnetic field generation, electronic ring current, coherent resonant excitation, direct single-photon ionization

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.

Key words: ultrafast magnetic field generation, electronic ring current, coherent resonant excitation, direct single-photon ionization

中图分类号: (Photoionization and excitation)

32.80.-t

32.90.+a (Other topics in atomic properties and interactions of atoms with photons) 42.25.Kb (Coherence) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)

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[J]. 中国物理B, 2021, 30(12): 123203-123203.

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Exploration of magnetic field generation of H₃²⁺ by direc ionization and coherent resonant excitation

Exploration of magnetic field generation of H₃²⁺ by direc ionization and coherent resonant excitation

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