RESONANT 2-PHOTON DISSOCIATION OF THE HD-COLOR PULSED-LASER FIELDS( IN THE PRESENCE OF 2)

We present a theoretical study of resonant two-photon dissociation (TP D) of the HD+ molecule in the presence of pulsed two-colour laser fiel ds using the density matrix formalism. The study includes the calculat ion of dissociation probabilities and decay rates as functions of time and the variation of total dissociation probabilities with detuning w hen both fields are assumed to have the same temporal shape and durati on. Results are reported for two simultaneous laser pulses as well as for two pulses with a time delay. The investigations were done with di fferent values of peak intensities I-1, I-2 for the initial and interm ediate levels as upsilon = 0, J = 0 and upsilon' = 17, J' = 1, respect ively, of the ground electronic state and the final continuum energy r eached by (omega(1) + omega(2)) photons was taken to be 106.43 cm(-1). The time variation and delay between pulses lead to interesting featu res in the time-dependent decay rates and spectral shapes of total dis sociation probabilities.