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Diffusion in helium-noble gas mixtures: II. Quasi Lorentzian mixtures

โœ Scribed by A.S.M. Wahby; M. Abdel-Rahman; J. Los

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
323 KB
Volume
112
Category
Article
ISSN
0378-4371

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โœฆ Synopsis

Diffusion coefficients have been measured of quasi Lorentzian mixtures of He and the noble gases Ne, Ar, Kr and Xe, in the temperature range from 237 to 420K. Good agreement is obtained with experimental data reported in. the literature. From the temperature dependence of Dn the thermal diffusion factor is predicted. These semi-empirical values agree very well with direct experimental determinations. Semi-quantitative agreement is obtained when comparing theoretical and experimental behaviour of the function [2 -(c~ In O,f~ ]

~T-nT]pJ'

applying for the theoretical calculations simple model potentials.

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