Diffusion and thermal diffusion in some dilute binary gaseous systems between 195 and 400 K: Tests of several asymmetric potentials using the infinite order sudden approximation

R.D. Trengove, K.R. Harris, H.L. Robjohns and Peter J. Dunlop

Physica A: Statistical Mechanics and its Applications, 1985, vol. 131, issue 3, 506-519

Abstract: Limiting binary diffusion coefficients, D012, for mixtures of He with Ar, O2, N2, CO2 and SF6 and of Ar with N2 and O2, determined by the two-bulb method, are reported for the temperature range 195–400 K. The apparatus, calibrated with absolute data obtained at 300 K with a Loschmidt cell, greatly extends the temperature range covered in this Laboratory, previously limited to 275–325 K. Thermal diffusion factors, αT, have been measured for the systems He-Ar at 350 K with He-O2, He-CO2 and Ar-O2 at 255.3 K. These results together with others previously reported have been used to test several asymmetric potential functions recently published in the literature.

Date: 1985
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:131:y:1985:i:3:p:506-519

DOI: 10.1016/0378-4371(85)90128-1

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