Abstract:
The influence of atomic iodine donors (CH3I and CF3I) on the output energy of a pulsed oxygen-iodine laser was investigated. Their influence on the time dependence of the luminescence intensity of I (2P1/2) iodine atoms formed by laser photolysis of an RI–O2–M mixture (R = CH3, CF3, M is the buffer gas) was also studied. An analysis of the experimental data and of the results of numerical modeling, demonstrated that when CF3I was used as the iodine donor, CF3O2 quenched strongly the O2(1Δ) excited oxygen. The proposed kinetic model yielded the rate constant k = (3–5) X 10–11 cm3/s for the reaction O2 (1Δ) + CF3O2 → O2 (3∑) + CF3O2.
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