Abstract
Diffusion coefficients of Na in He, Ne, and Ar are calculated from the molecular Chapman–Enskog theory. For the Na–Ne system, only Patil’s potential [J. Chem. Phys. 94, 8089 (1991)] among all proposed potentials predicts a temperature dependence of the coefficients that is in agreement with the available measurements. Besides providing reliable diffusion coefficients, present results validate Patil’s theoretical method which has some unique and far-reaching features.
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