Be. Wurfel et al., INFRARED FLUORESCENCE AND ABSORPTION STUDIES OF CN - SPECTRA AND RELAXATION IN SOLID RARE-GASES, Chemical physics, 174(2), 1993, pp. 255-265
The spectra and relaxation of CN radicals are studied by FTIR absorpti
on and emission spectroscopy. The relaxation of excited A 2PI vibratio
nal levels proceeds via efficient intramolecular internal conversion p
rocesses between the A 2PI and X 2SIGMA levels. The intensity distribu
tion in the observed vibrational CN fluorescence is explained by the o
ccurrence of rapid intermolecular vibrational energy transfer and ''la
dder climbing'' processes. The effect of isotopic substitution and med
ium effects on the relaxation dynamics are also discussed.