Self-quenching and zero-pressure lifetime studies of NO2 at 465-490, 423-462 and 399-416 nm

The self-quenching and zero-pressure lifetimes for NO2 have been obtained from the lifetimes measured previously at different gas pressures by the pulse excitation technique in three spectral regions: 465-490, 423-462, and 399-416 nm at an interval of 0.2, 0.5, and 0.2 nm, respectively. The estimation of zero-pressure lifetimes and self-quenching rate constants has been carried out with an accuracy of +/- 5 percent and +/- 7 percent, respectively, for the static component of lifetime alone. The results obtained have been compared with other measurements wherever possible. (Author)