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Transition probabilities for NII 2p4f-2p3d and 2s2p^23d-2s2p^23p obtained by a semiclassical method

Chinese Physics B 2007年第10期16卷 2934-2937页

作者：申晓志袁萍张华明王杰 College of Physics and Electronic Engineering Northwest Normal University Lanzhou 730070 China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Thunder Prevention and Observation Center of Shanxi Province Taiyuan 030002 China

Based on NII spectra, some transition probabilities for 2p4f-2p3d and 2s2p23d-2s2p23p are obtained by a semi- classical method. The results are in good agreement with other measurements and the data reported by the National Institute of Standards and Technology. The transition probability for a line of 424.18nm is reported for the first time. Meanwhile, a feasible method of calculating transition parameters related to special excited configurations or highly excited states is provided.

关键词： NII ion transition probability semiclassical method

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Review on typical applications and computational optimizations based on semiclassical methods in strong-field physics

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Chinese Physics B 2022年第3期31卷 1-15页

作者： Xun-Qin Huo Wei-Feng Yang Wen-Hui Dong Fa-Cheng Jin Xi-Wang Liu Hong-Dan Zhang Xiao-Hong Song Institute of Mathematics College of ScienceShantou UniversityShantou 515063China School of Science Hainan UniversityHaikou 570288China Research Center for Advanced Optics and Photoelectronics Department of PhysicsCollege of ScienceShantou UniversityShantou 515063China Faculty of Science Xi'an Aeronautical UniversityXi'an 710077China

The semiclassical method based on Feynman’s path-integral is in favor of uncovering the quantum tunneling effect,the classical trajectory description of the electron, and the quantum phase information, which can present an intuitive and transparent physical image of electron’s propagation in comparison with the ab initio time-dependent Schr ¨odinger *** this review, we introduce the basic theoretical concepts and development of several semiclassical methods as well as some of their applications in strong-field physics. Special emphasis is placed on extracting time delay on attosecond scale by the combination of the semiclassical method with phase of phase method. Hundreds of millions of trajectories are generally adopted to obtain a relatively high-resolution photoelectron spectrum, which would take a large amount of time. Here we also introduce several optimization approaches of the semiclassical method to overcome the time-consuming problem of violence calculation.

关键词： semiclassical method attosecond time delay Phase of Phase deep learning

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semiclassical investigation of Coulomb focusing effects in atomic above-threshold ionization with elliptically polarized laser fields

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Chinese Physics B 2017年第4期26卷 156-161页

作者：王传亮夏立新姚洪斌李文亮 School of Physics and Electrical Engineering Kashgar University Department of Physics Xinjiang Institute of Engineering

We investigate atomic above-threshold ionization in elliptically polarized strong laser fields with a semiclassical *** increasing laser intensity,the Coulomb focusing（CF） effects are found to become stronger in both parallel and perpendicular directions with respect to the polarization *** dependence of CF effects on tunnel exit,initial transverse momentum distribution and laser electric field is *** was revealed that the effects of tunnel exit are most prominent with variation of the laser intensity,and the other two factors both play non-negligible *** results provide a deeper insight to the recent experiments of Coulomb asymmetry[Shafir D,et al.,2013 ***.111 023005 and Li M,et al,2013 ***.111 023006].

关键词： above-threshold ionization Coulomb focusing effect semiclassical method elliptically polarized laser fields

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