Determination of diffusion coefficients of C2 radicals by laser induced fluorescence spectroscopy
Diffusion coefficients of C2 radicals in Ar and H2 were determined experimentally for the first time. The C2 radicals were generated by a multi-photon laser photolysis and the spatial behaviour was observed by laser-induced fluorescence spectroscopy. Spatial distributions measured were compared with a theory to determine diffusion coefficients. It is shown that the present technique is suitable to measure diffusion coefficients of short-lived radicals that are difficult to measure by any other means.
PACS32.50.+d 82.30.Cf 82.50.-m
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