Two-color multiphoton decomposition of 1-bromo 2-fluoroethane

Article abstract of DOI:10.1002/kin.550260115

Multiphoton decomposition of 1-bromo 2-fluoroethane (CH₂BrCH₂F, BFE) with a two-color CO₂ infrared laser is reported as a function of number of laser pulses. For single color irradiation at a wavelength chosen to excite BFE, the decomposition product, vinyl fluoride, which accumulates during the many-pulse MPD experiment, is found to deactivate BFE decomposition. When a second laser, tuned to a vinyl flouride absorption is introduced, coincident with the first, the vinyl fluoride is found to activate further BFE decomposition. These results are accounted for in terms of a pressure-dependent model. Changes in model parameters, upon addition of the second laser, are shown to be consistent with interpretations in terms of collision-dependent reaction schemes.