New reaction rate constants of CF3, n-C3F7, and i-C3F7 radicals

Measured absolute characteristics of photodissociation iodine lasers utilizing RI molecules (CF₃I, n -C₃F₇I, i -C₃F₇I) were used to determine the number of excited I*(²P_1/2) atoms formed as a result of photolysis of RI. In the absence of a laser field, all the I* atoms formed in this way combined into I₂ molecules. This was evidence of a low efficiency of the R+I*→RI reaction. The results obtained were used to calculate the rate constants of recombination of the radicals R with one another and with iodine atoms.