The Role of Nuclear Coulomb Attraction in Nonsequential Double Ionization of Argon Atom

Details The Role of Nuclear Coulomb Attraction in Nonsequential Double Ionization of Argon Atom The Role of Nuclear Coulomb Attraction in Nonsequential Double Ionization of Argon Atom

2010-07-23

arxiv.org/abs/1007.4059v1

Physics

Atomic Physics

10 pages, 5 figures

Scientific paper

The role of nucleus in strong-field nonsequential double ionization of Ar atoms is investigated using three-dimensional classical ensembles. By adjusting the nuclear Coulomb potential, we can excellently reproduce the experimental correlated electron and ion momentum spectra with laser intensities above the recollision threshold [Phys. Rev. Lett. 93, 263001 (2004)] and below the recollision threshold [Phys. Rev. Lett. 101, 053001 (2008)] quantitatively. Analysis reveals the detailed electronic dynamics when the nuclear Coulomb attraction plays a key role in the recollision process of nonsequential double ionization of Ar atoms. Comparison between our results for Ar and those for He shows that atom species have a strong influence on nonsequential double ionization.

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