Influence of rotation on the vibrational predissociation of the van der Waals molecule HeI2

Abstract

We apply a rotational decoupling scheme related to the infinite order sudden approximation to treat vibrational predissociation of the triatomic van der Waals molecule HeI2. The potential surface is described by the sum of three Morse potentials between individual bonds. The total rate for vibrational predissociation as a function of vibrational excitation is compared with the results obtained for the colinear and T-shaped models. Final rotational distributions for the I2 fragment are also obtained. © 1980 American Institute of Physics.