Abstract
The time-dependent version of a Golden Rule treatment for studying vibrational predissociation (VP) of a model triatomic van der Waals (vdW) X ċ BC system shows the VP rate as the Fourier transform of an autocorrelation function. Analytical fits to this time dependent function allow the rewriting of such a rate in terms of the autocorrelation time. This suggests the possibility of using a diabatic vibrational approximation within the classical frame. In particular, it would enable the study of the VP of vdW clusters containing a fast vibrational diatomic subunit, a current bottleneck in quasiclassical trajectory (QCT) calculations.
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