Abstract
In contrast to the CO2 laser, the pulsed HF chemical laser emitting in the ∿ 2.6—3.1 μm region has not been widely employed in multiple photon IR photochemistry although visible luminescence from adsorbing gases irradiated with HF laser radiation [1] and the decomposition of methanol [2], formic acid [3] and ethanol [4] have been recently reported. A question of considerable interest is the extent to which the primary process and products of laser-induced decomposition are affected by the irradiating frequency, and we describe here the results of a comparative study of the decomposition of methanol using CO2 and HF lasers to excite the CO (1033 cm-1) and OH (3681 cm-1) stretching vibrations respectively.
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