Classical collisional trajectories as the source of strong-field double ionization of helium in the knee regime

Details Classical collisional trajectories as the source of strong-field double ionization of helium in the knee regime Classical collisional trajectories as the source of strong-field double ionization of helium in the knee regime

2001-12-05

arxiv.org/abs/physics/0112010v1

Phys. Rev. A 63, 043416 (2001)

Physics

Atomic Physics

6 pages, 11 figures

Scientific paper

10.1103/PhysRevA.63.043416

In this paper, a quasistatic model is extended to describe the double ionization of Helium in intense linearly polarized field, yielding achieve an insight to 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 and responsible for the unusual angular distribution of the photoelectrons.

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