Abstract
The time-dependent multi-configuration Hartree method is applied to nonsequential double ionization and to high harmonic generation and molecular tomography in a two-electron diatomic model molecule with two-dimensions per electron. The efficiency of our method brings these calculations from the realm of large scale computation facilities to single processor machines. The resulting two-electron spectrum exhibits pronounced signatures from which the ionic bound states involved in nonsequential double ionization are retrieved with the help of a semi-classical model. A mechanism for the ionization dynamics is suggested. In HHG, all relevant multi-electron effects are identified and quantified and their implications on molecular tomography are discussed.
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