Deflections of photoelectron classical trajectories in screened Coulomb potentials of H2+

doi:10.1088/1674-1056/24/11/114208

中国物理B ›› 2015, Vol. 24 ›› Issue (11): 114208-114208.doi: 10.1088/1674-1056/24/11/114208

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Deflections of photoelectron classical trajectories in screened Coulomb potentials of H₂⁺

秦博雅^a, 王培杰^b, 何峰^c

a Zhiyuan College, Shanghai Jiao Tong University, Shanghai 200240, China;
b Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, China;
c Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China

收稿日期:2015-01-11 修回日期:2015-05-25 出版日期:2015-11-05 发布日期:2015-11-05
通讯作者: He Feng E-mail:fhe@sjtu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11104180, 11175120, 11121504, and 11322438) and the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (Grant No. 131010).

Deflections of photoelectron classical trajectories in screened Coulomb potentials of H₂⁺

Qin Bo-Ya (秦博雅)^a, Wang Pei-Jie (王培杰)^b, He Feng (何峰)^c

a Zhiyuan College, Shanghai Jiao Tong University, Shanghai 200240, China;
b Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, China;
c Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2015-01-11 Revised:2015-05-25 Online:2015-11-05 Published:2015-11-05
Contact: He Feng E-mail:fhe@sjtu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11104180, 11175120, 11121504, and 11322438) and the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (Grant No. 131010).

摘要/Abstract

摘要： The photoelectron momentum distribution of H₂⁺ in circularly polarized laser fields is studied based on classical trajectory calculations. We screen Coulomb potentials at different radii, and trace trajectories of an ensemble of electrons in such screened Coulomb potentials and circularly polarized laser fields. Simulations show that electron trajectories are bent by Coulomb fields, resulting in the laser-intensity-dependent drift of photoelectron momentum distributions in the laser polarization plane. This study intuitively explains how Coulomb potentials modify photoelectron momenta.

关键词: hydrogen molecular ion, photoelectron momentum distribution, strong laser field

Abstract: The photoelectron momentum distribution of H₂⁺ in circularly polarized laser fields is studied based on classical trajectory calculations. We screen Coulomb potentials at different radii, and trace trajectories of an ensemble of electrons in such screened Coulomb potentials and circularly polarized laser fields. Simulations show that electron trajectories are bent by Coulomb fields, resulting in the laser-intensity-dependent drift of photoelectron momentum distributions in the laser polarization plane. This study intuitively explains how Coulomb potentials modify photoelectron momenta.

Key words: hydrogen molecular ion, photoelectron momentum distribution, strong laser field

中图分类号: (Frequency conversion; harmonic generation, including higher-order harmonic generation)

42.65.Ky

32.80.Rm (Multiphoton ionization and excitation to highly excited states) 32.30.Jc (Visible and ultraviolet spectra) 34.80.Qb (Laser-modified scattering)

秦博雅, 王培杰, 何峰. Deflections of photoelectron classical trajectories in screened Coulomb potentials of H₂⁺[J]. 中国物理B, 2015, 24(11): 114208-114208.

Qin Bo-Ya (秦博雅), Wang Pei-Jie (王培杰), He Feng (何峰). Deflections of photoelectron classical trajectories in screened Coulomb potentials of H₂⁺[J]. Chin. Phys. B, 2015, 24(11): 114208-114208.

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Deflections of photoelectron classical trajectories in screened Coulomb potentials of H₂⁺

Deflections of photoelectron classical trajectories in screened Coulomb potentials of H₂⁺

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