Evidence for final state interactions in the vibrational predissociation of ICl–Ne complexes

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Abstract
The nascent ICl rotational state distribution is examined following vibrational predissociation of ICl–Ne A state complexes from a range of initial vibrational levels, vA. The energy released to fragments after the loss of one quantum of ICl vibrational excitation varies dramatically over the initial vA levels investigated. The ICl rotational product distributions are shown to be strongly dependent on the energy available to fragments. The efficiency of energy transfer into ICl rotations is similar for vibrational predissociation of ICl–Ne complexes prepared in vA=11, 14, and 19. The energy dependence of the peaks in the ICl rotational product distributions is consistent with an impulsive final interaction between ICl and Ne, analogous to a rotationally inelastic half-collision.