The Interpretation of Intensity Distributions in the CN Violet, C2Swan, OH Violet and O2Schumann-Runge Band Systems by use of theirr-Centroids and Franck-Condon Factors

Abstract

Intensity distributions in the CN violet, C2 Swan, OH violet and O2 Schumann-Runge band systems are examined to determine in each case the dependence of the electronic transition moment Re(r) upon internuclear separation r, with the aid of Franck-Condon factors qψ'ψ'' and r-centroids rψ'ψ''. It is found that Re(r) = const (-1 + 2.579r) for the CN violet system, that Re(r) = const (1 + 0.056r) for the C2 Swan system, that Re(r) = const(1 - 0.756r) for the OH violet system and that Re(r) = const (-1 + 2.416r - 0.897r2) for the O2 Schumann-Runge system. `Smoothed' arrays of relative vibrational transition probabilities have thereby been determined for each band system.