2001/03/20 by Libin Fu, Li-Bin Fu, Jie Liu +3 · 2 citations
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Laser-Matter Interactions and Applications #Mass Spectrometry Techniques and Applications #physics.atom-ph
paper · pdf · doi:10.1103/physreva.63.043416
published as Phys. Rev. A 63, 043416 (2001) · 6 pages, 11 figures
openalex publication_date 2001/03/20 · arxiv created 2001/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, the quasistatic model is extended to describe the double ionization of helium in an intense linearly polarized field, yielding insight into the two-electron correlation effect in the ionization dynamics. Our numerical calculations reproduce the excessive double ionization and the photoelectron spectra observed experimentally both quantitatively and qualitatively. Moreover, it is shown that the classical collisional trajectories are the main source of the double ionization in the knee regime where the double ionization yield is much higher than that predicted by the sequential single active electron models, and responsible for the unusual angular distribution of the photoelectrons.