Abstract
The vibrational predissociation of triatomic, i.e., atom-diatom, van der Waals complexes in transient electronic excited state has been widely investigated. The predissociation rates or lifetimes are major concerns of the previous studies. Experimentally rotational state distributions of diatomic product are hardly investigated and few theoretical stuides on rotational state distributions have appeared in literature. In this work, choosing the frequently studied <TEX>$I_2(B)-Ne$</TEX> complex as an example, we investigate the change of rotational state distributions of <TEX>$I_2(B)-Ne$</TEX> produced from predissociation of the various initial states of <TEX>$I_2(B)-Ne$</TEX>. The present study on the rotational distributions indicates that rotational state distributions depend significantly on the predissociation energy and the van der Waals vibrational modes of <TEX>$I_2(B)-Ne$</TEX>. That is, the initial state dependency of rotational state distributions is extensively discussed.
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