Fluorescence of nitric oxide. Part 7.—Quenching rates of NO C2Π(v= 0), its rate of radiation to NO A2Σ+, energy transfer efficiencies, and mechanisms of predissociation
The following experimental results are reported : (a) accurate rates of quenching of NO C2Π(v= 0) by N2, CO2, Ar and NO; (b) measurement of the rate of the NO C2Π(v= 0)→NO A2Σ+ cascade radiation (fel= 1.6±0.6); (c) efficiencies of energy transfer in the deactivation of NO C2Π(v= 0) to A2Σ+; (d) evidence for electronic energy transfer in the deactivation of NO D2Σ+(v= 0) to NO A2Σ+ by N2; (e)“anomalous” quenching rates of the δ-bands by N2, CO2 and NO, and (f) partial quenching of the 15N16O δ-emission by Ar. A route via NO a4Π is adopted to account for the predissociation of NO C2Π(v= 0). It is suggested that the levels below F2(7/2) of 14N16O C2Π(v= 0) lie below the dissociation limit, indicating Do(NO)= 52,400±10cm–1. A compilation of the quenching parameters is given.