Knowledge Bank

The Franch-Condon factors and the r-centroids based on the vibrational wave functions appropriate to the Rydberg-Klein-Rees (RKR) potential energy curves, have been computed for the $\gamma$ and $\beta$ band systems of the NO molecule. These have been compared with the RKR and the Morse Franck-Condon factors reported by the previous workers. The variation of the electronic transition moment with the internuclear distance has been obtained for the $\gamma$ system of NO by a new technique as well as by the r-centroid method and the `smoothed' relative band strengths for this system have been calculated.