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

2010/07/23 by Qing Liao, Yueming Zhou, Liao, Qing +3
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Optics (physics.optics) #physics.atom-ph #physics.optics

paper · pdf · doi:10.48550/arxiv.1007.4059

10 pages, 5 figures

arxiv created 2010/07/23 · arxiv updated 2010/07/26

Abstract

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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