Abstract
The diffusion coefficient of trace amounts of xenon-133 has been measured in binary mixtures of xenon with helium, neon, argon, and krypton. Measurements were made over the complete composition range in the pressure range 10–300 Torr at 302.6 °K. These systems are the first studied in which the results do not agree with the equation:[Formula: see text],which relates the effective diffusion coefficient of a trace in an ideal gas mixture to binary diffusion coefficients and the composition of the mixture. Deviation from this equation can not be accounted for in terms of the known deviation of xenon from ideal gas behavior.The self-diffusion coefficient of xenon was 0.060 and the binary diffusion coefficients Xe–He 0.535, Xe–Ne 0.230, Xe–Ar 0.127, Xe–Kr 0.0823, in cm2 s−1 corrected to 1 atm pressure.
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