DISSOCIATION OF MOLECULAR-HYDROGEN IONS BY AN IR LASER-PULSE

Dissociation dynamics of the simplest molecular systems, such as H-2(), D-2(+), and HD+ ions, in an intense IR laser field has been investi gated by numerical modeling. An n-term approximation has been develope d to describe the molecular system dynamics in an intense electromagne tic field. Calculations by the n-term approximation have been compared to an accurate numerical solution of the two-particle problem. The di ssociation probability as a function of the frequency and intensity of radiation for different isotopes in a molecular hydrogen ion is discu ssed. A quasistatic model of molecule dissociation in an IR field has been suggested, and limits of its applicability have been determined. (C) 1998 American Institute of Physics.