Non-Equilibrium Distribution of Populations in Vibrational-Rotational Levels of Diatomic Species Split from Three-Atomic Complex

The vibrational and rotational population distributions expected of the diatomic species AB just after splitting from the tri-atomic complex [ABC] have been calculated on the basis of the statistical model including the law of angular momentum conservation. It has been shown that the angular momentum possessed by the complex [ABC] exerts considerable influence upon the initial and non-thermal distribution of populations in the vibrational and rotational levels of AB.