Selective IR multiphoton dissociation of CF3I in a nonequilibrium pressureshock

The isotopically selective IR multiphoton dissociation of CF3I is studied i n a nonequilibrium pressure shock formed in the interaction of a pulsed gas -dynamically cooled molecular flow with a solid surface. The yield of a C2F 6 product and its enrichment factor by the C-13 isotope were measured exper imentally. The time-of-flight spectra of CF3I were obtained in the flow int eracting with the surface and in an unperturbed flow. The spectral dependen ces of the yield of a C2F6 product in an unperturbed flow and in a pressure shock were studied along with the process selectivity. It was shown that t he efficiency of isotopically selective molecule dissociation can be signif icantly increased due to the formation of a pressure shock. The origin of t he results observed are discussed.