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Vibrational Breakup of Triatomic Collision Complexes: A Model Study for H + ‐H 2
Author(s) -
Drolshagen Gerhard,
Gianturco Francesco Antonio,
Toennies J. Peter
Publication year - 1989
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.198900052
Subject(s) - chemistry , triatomic molecule , angular momentum , diatomic molecule , atomic physics , dissociation (chemistry) , diabatic , angular momentum coupling , breakup , total angular momentum quantum number , molecular physics , classical mechanics , physics , inorganic compound , quantum mechanics , molecule , organic chemistry , adiabatic process , mechanics
The predissociative behavior of the H + 3 system is studied from the point of view of purely vibrational coupling between the rotationally‐averaged motions of the neutral diatomic and the bound proton. By decoupling the effects of the usual rotational barriers from those induced by the potential strength as a function of relative separations, one is able to see that the vibrational interchannel coupling shows strong propensity and highly nonstatistical propagation among bound levels and that the inner chaotic motion often assumed for this system is mostly controlled by the presence of multiple angular momentum barriers. Tunneling through these multiple rotational momentum barriers appears to be responsible for the slow dissociation seen in spectroscopic experiments.