Transport properties of diatomic gases

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Abstract
The coefficients of shear viscosity and self-diffusion for nitrogen in the dilute gas limit have been calculated within the Mason-Monchick approximation using the intermolecular potential surfaces of Berns and van der Avoird and van Hemert and Berns. The same potentials had previously been used in transport property calculations using the classical limit of the Wang Chang, Uhlenbeck and de Boer theory. Comparisons between the results for each potential surface using the different transport theories reveal surprising discrepancies which increase with increasing temperature. Possible causes of this behaviour are considered.