Quenching of NO(D 2Σ+, E 2Σ+) formed by UV photodissociation of NOCl

Article abstract of DOI:10.1063/1.443561

The photodissociation of NOCl at 193 nm has resulted in vibrationally excited NO which was subsequently excited to the D(v=5) and E(v=0) states.The resulting fluorescence at 160-180 nm has been analyzed in terms of a kinetic model.Saturtion of the photodissociation was observed at laser intensities above 2 MW/cm².The quenching rate constants of NO^* by Ne, Ar, Kr, and Xe were determined to be k_Ne=6.4+/-1.6)*10^-11 cm³ s^-1, KAr=(1.7+/-0.4)*10^-10 cm³ s^-1, k_Kr=(6.6+/-1.7)*10^-10 cm³ s^-1, and k_Xe=(1.0+/-0.2)*10^-9 cm³ s^-1.The quenching by NO and Cl was explained in terms of charge transfer mechnaism and the corresponding rate constants were found to be: k_NO=(2.7+/-0.6)*10^-9 cm³ s^-1 and k_Cl=(2.1+/-0.5)*10^-9 cm³ s^-1.