Abstract

The results of capillary thermal transpiration measurements for nitrogen, oxygen, carbon monoxide, methane, methyl chloride, hydrogen sulfide, and sulfur dioxide over a (mean) temperature range of 408.6 to 501.3°K are reported. The problem that arises in interpreting the data to obtain thermal transport information is carefully considered. While this difficulty is not completely resolved, our data for the nonpolar gases are combined with our earlier results and used to compute smoothed values of the rotational relaxation numbers and Eucken factors for the temperature range 165–500°K.

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