IONIZATION AND HARMONIC-GENERATION PROCESSES IN H-2(+)

New features on electron dynamical processes produced during the inter action of a linearly polarized short intense laser pulse with an isola ted H-2(+) molecular ion are reported. On the assumption of Born-Oppen heimer approximation for nuclei motion we emphasize the leading role o f molecular structure in order to explain new features concerning ioni zation and, as a result, harmonic generation. In particular, we analyz e the connection between internal tunnel ionization and harmonic order s exceeding the expected atomic cutoff frequencies, as well as the dep endence of harmonic efficiencies on the ionization regime.