1Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China 3Institute of Applied Physics and Computational Mathematics, Beijing 100088, China 4HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100084, China 5State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China 6University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：Universality of the dynamic characteristic relationship between the characteristic time $t_{\rm c}$ and the two-electron Coulomb interaction energy $\overline{V}_{12}$ of the ground state in the two-photon double ionization process is investigated via changing the parameters of the two-electron atomic system and the corresponding laser conditions. The numerical results show that the product $t_{\rm c}\overline{V}_{12}$ keeps constant around 4.1 in the cases of changing the nucleus charge, the electron charge, the electron mass, and changing simultaneously the nucleus charge and the electron charge. These results demonstrate that the dynamic characteristic relationship in the two-photon double ionization process is universal. This work sheds more light on the dynamic characteristic relationship in ultrafast processes and may find its application in measurements of attosecond pulses.
(Ultrafast processes; optical pulse generation and pulse compression)
引用本文:
. [J]. 中国物理快报, 2020, 37(11): 113201-.
Fei Li, Yu-Jun Yang, Jing Chen, Xiao-Jun Liu, Zhi-Yi Wei, and Bing-Bing Wang. Universality of the Dynamic Characteristic Relationship of Electron Correlation in the Two-Photon Double Ionization Process of a Helium-Like System. Chin. Phys. Lett., 2020, 37(11): 113201-.
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2020, Vol. 37 
