THEORETICAL INVESTIGATIONS OF THE LIFETIME OF SH AND SD ((A)OVER-TILDE (2)SIGMA(-CENTER-DOT-CENTER-DOT-CENTER-DOT-SH()) IN M)D (M=NE,AR,KR)COMPLEXES/

The Lifetimes of SH and SD in the (A) over tilde (2)Sigma(+) electroni c state are investigated as a function of the intermolecular vibration al states of Ne ... SH, Ar ... SH and Kr ... SH. Model potentials are developed for these systems and the lifetimes, calculated from these p otentials, agree well with those reported by Miller, and co-workers [A pplegate, Yang and Miller, J. Chem. Phys. 109, 162 (1998)]. The calcul ated Lifetimes are analyzed using an empirical ballistic model that as sumes that the rare gas atom effectively blocks electronic predissocia tion for certain geometries. The results of this model are found to be in good agreement with the more demanding adiabatic calculations of t he dynamics and with the experimental lifetimes. (C) 1998 American Ins titute of Physics. [S0021-9606(98)01025-3].