Relative Rate Constants for Reactions of O(1D) Atoms Generated by Flash Photolysis of Ozone

In view of the large disparities in the values of some rates of destruction of the excited (singlet) oxygen atoms $\mathrm{O}{(}^1\mathrm{D)}$ , flash plotolysis of ozone in the presence of excess nitrous oxide has been used as an alternative source of $\mathrm{O}{(}^1\mathrm{D)}$ atoms to measure relative rates of their reaction with a number of added gases. The values obtained for SF₆, He, CO₂, Xe, neopentane, and N₂O are consistent with the earlier results from this laboratory obtained using entirely different sources of $\mathrm{O}{(}^1\mathrm{D)}$ atoms. The relative rates of $\mathrm{O}{(}^1\mathrm{D)}$ reactions with H₂O vapor and O₂ have also been determined and the values obtained are compared with the data in the literature.