Transition probability parameters of molecular spectra arising from combustion processes

Abstract

The dependence of intensity distributions in molecular spectra upon ( a) source conditions and (b) molecular constants (particularly transition probabilities) is discussed briefly. Knowledge of transition probabilities is essential to the interpretation of spectral intensities in terms of source conditions. Arrays of Franck-Condon factors q v′v″, which are closely related to relative vibrational transition probabilities. p v′v″, have been computed upon a Morse model and are presented for a comprehensive range of band systems of significance in combustion processes for the molecules C 2, CN, B 2, BO, BH, BN, OH, O 2, NO, PbO. Where available, values of smoothed relative vibrational transition probabilities p v′v″ and band intensities at infinite temperature I ∞r′r″ are also given.