Determination of diffusion coefficients of C2 radicals by laser induced fluorescence spectroscopy
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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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