Abstract
We present a new procedure for the determination of the kinetic energy spectra of molecules undergoing multiphoton above-threshold dissociation (ATD) in intense laser fields. The method is based on the extension of the non-Hermitian Floquet theory and an integral equation formulation of the partial rates. The non-Hermitian Floquet Hamiltonian is discretized by means of the complex-scaling generalized pseudospectral technique, and a back rotation procedure is introduced for extracting the partial widths from the total resonance wavefunctions. The method is applied to the study of the ATD energy spectra of H 2 + molecular ions in intense (775 nm) laser fields.
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