Abstract
Time-dependent Schrodinger equation for a 1-D model of hydrogen molecular ion H2+ in intenselaser field linearly polarized along the molecular axis is solved. Ionization rates are calculated for differentinitial states. The evolution of electronic wavefunction at fixed inter-nuclear separations are simulated andanalyzed. The results obtained for the ground state of this 1-D model of H2+ show appreciable qualitative agreement with the results obtained previously in the 2-D and 3-D studies. The Ponderomotive energy effect on the beginning of ionization in different initial states is observed. The above threshold ionization has a large contribution in the ionization of electrons, except for the ground state and at equilibrium inter-nuclear separation. The ionization rates show that at some inter-nuclear separations larger than 4.0 au, resonance enhancement ionization by some higher excited states occur. At inter-nuclear separations shorter than 4.0 au, the ground state does not show any resonance with higher excited states.
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