Wavelength Dependence of the Two Channels for Double Ionization of He in Intense Laser Field

Authors

  • Chan Li Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006
  • Xiao-Lei Hao Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006
  • Wei-Dong Li Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006
  • Zheng Shu Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088, China
  • Jing Chen Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088, China

DOI:

https://doi.org/10.4208/jams.042117.061417a

Keywords:

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Abstract

In this paper, we investigate the double ionization process of He for the shakeoff (SO) and correlated energy-sharing (CES) channels in intense laser field based on the intense-field many body S-matrix theory (IMST). The wavelength dependence of the ionization rate from these two channels are analyzed and compared with each other. According to our calculation, the CES channel dominants at long wavelengths (300-780nm), while the SO channel dominants at short wavelengths (20-200nm). The more interesting thing occurs in the intermediate wavelength regime (200-300nm) where the contributions from the SO and CES channels are comparable and may compete with each other.

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Published

2017-08-01

Issue

Vol. 8 No. 1 (2017)

Section

Articles