Condon approximation, direct molecular

The dynamical features associated with the light atom anomaly, e.g., direct mechanism without snarled trajectories (except for XX cases) and short reaction times compared with the vibrational periods of molecular vibrations have made the H + X2 reactions a favorite for development of models for impulsive energy release.The approximately collinear reaction configuration (at least for F2 and CI2) provide n incentive to those interested in rigorous one-dimensional quantum lodels. " The nonlinear surprisals also have been a stimulus for work based upon the information-theoretic approach. The vibrational (especially so for the onedimensional base and translationaF " surprisals are approximately quadratic, rather than linear. These distributions can be understood in terms of an additional constraint, which is termed a Franck-Condon-like or momentum transfer constraint. Introduction of this constraint leads to a... 

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