FLASH-PHOTOLYSIS OF IODIDES IN THE PRESEN CE OF QUENCHING GASES .3. PHOTOLYSIS C3F7OI

The quenching buffer method was used in measurements of the rate const ants of the principal reactions involved in flash photolysis of the io dide C3F7OI (RI) and of its mixtures with buffer gases M (CF3H, H2O): R + R --> R(2); R + I --> RI; I + RI, M, I-2 --> I + RI, M, I-2; I I + RI, M --> I-2 + RI, M. The broadening coefficients were determined for the line due to the active transition in a photodissociation lase r when the broadening was due to collisions with C3F7OI, CF3H, and H2O molecules. The probabilities of formation of excited iodine atoms by photodissociation of the iodides C2F5I and C3F7OI with broadband ultra violet radiation were also round. The low recombination efficiency (fo und for the iodides investigated earlier) was confirmed for the C2F5 a nd C3F7O radicals interacting with excited iodine atoms.