Abstract
Time-independent quantum scattering close coupled equations are derived for non-adiabatic collisions involving a Hund case (c) diatomic molecule and a structureless particle. Infinite-order sudden and/or exponential distorted wave approximations are introduced to reduce the size of the system of close-coupled equations. The theory developed is applied to the study of non-adiabatic transitions between the first-tier ion-pair electronic states of an iodine molecule in collisions with Ar atoms. Calculations of cross sections and rate constants indicate the necessity of the close-coupling treatment of the vibronic channels and provide qualitative agreement with available experimental data.
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More From: Journal of Physics B: Atomic, Molecular and Optical Physics
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