Vacuum-Ultraviolet Photolysis of N2O. IV. Deactivation of N(2D)

The $\mathrm{NO}\mathrm{(\beta )}$ emission ${\mathrm{(B}}^2{\mathrm{II\to X}}^2\mathrm{II)}$ observed during photolysis of N₂O at 1470 Å is due to a chemiluminescent reaction between $\mathrm{N}{(}^2\mathrm{D)}$ and N₂O. Transient measurements of this emission are analyzed to give the rate coefficients for removal of $\mathrm{N}{(}^2\mathrm{D)}$ by several simple molecules. Photolysis at 1236 Å also produces $\mathrm{NO}{\mathrm{(B}}^2\mathrm{\Pi )}$ , and the decay curves can be analyzed to give the same rate coefficients as observed at 1470 Å, although there is evidence that an additional $\mathrm{NO}{\mathrm{(B}}^2\mathrm{\Pi )}$ production mechanism is involved. Quenching coefficients are also tabulated for ${\mathrm{N}}_2{\mathrm{(A}}^3\mathrm{\Sigma )}$ and $\mathrm{O}{(}^1\mathrm{S)}$ , two other species investigated by the same technique.