Abstract
AbstractMultiphoton 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 fluoride 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. © 1994 John Wiley & Sons, Inc.
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