Energy transfer processes in monochromatically excited iodine. IX. Classical trajectory and semiclassical calculations of vibrationally and rotationally inelastic cross sections

Classical trajectory calculations were carried out on the system in which I₂ in the ³II₃. Excited electronic state and certain specific vibrational and rotational levels interact with the inert gases as collision partners. The trajectory results duplicated the effective cross sections for vibrational and rotational energy transfer into specific channels, as well as the mass dependence of the total cross sections for vibrational and rotational energy transfer when a correction was made for quenching. A semiclassical model provided less accurate values for the vibrational deactivation probabilities, but at a considerable saving of computation time.