【摘 要】
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As a pivotal manifestation of the electron-electron correlations[1] in a strong field,non-sequential double ionization (NSDI) of atoms and molecules in a strong
【机 构】
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College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000
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As a pivotal manifestation of the electron-electron correlations[1] in a strong field,non-sequential double ionization (NSDI) of atoms and molecules in a strong laser field has continuously attracted experimental and theoretical attention.[2-17] Nowadays,the widely accepted picture for NSDI is the quasiclassical recollision model.[18] According to this model,the first electron tunnels through the combined barrier of the laser electric field and the Coulomb potential.Then it is driven by the oscillating electric field and retus to the parent ion as the electric field reverses its direction,recolliding with the ion inelastically and leading to the second electron freed directly in an (e,2e) process or being excited with subsequent field ionization(RESI).
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