CREATION OF DISCRETE QUASI-ENERGY RESONANCE STATES IN STRONG ELECTROMAGNETIC-FIELDS

The combined complex-coordinate-Floquet formalism, which has been described in detail in J. Chem. Phys. 94, 7311 (199 1 ), is used for numerical studies of the creation of discrete long-lived quasienergy resonance states for two model Hamiltonians which describe the interaction of dissociative/ionizing systems with intense monocromatic field. Despite the fact that the two model Hamiltonians have the same energy spectrum in the absence of field, the number of resonance states which they support and the general behavior of the resonances in the presence of the field is entirely different. An analysis Of the dependence of the quasienergy resonance spectrum on field intensity in terms of the dependence of the dressed potential spectrum m the field intensity was found adequate for medium intensity fields, but failed for strong fields.