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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

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

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.

Suggested Citation

  • Trengove, R.D. & Harris, K.R. & Robjohns, H.L. & Dunlop, Peter J., 1985. "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," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 131(3), pages 506-519.
    • Handle: RePEc:eee:phsmap:v:131:y:1985:i:3:p:506-519
    DOI: 10.1016/0378-4371(85)90128-1
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    References listed on IDEAS

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    1. Arora, P.S. & Robjohns, H.L. & Dunlop, Peter J., 1979. "Use of accurate diffusion and second virial coefficients to determine (m, 6, 8) potential parameters for nine binary noble gas systems," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 95(3), pages 561-571.
    2. P.Greiner & J.M. Portier, 1984. "Une nouvelle approche statistique du revenu des agriculteurs : l'ERDEXA," Économie rurale, Programme National Persée, vol. 162(1), pages 23-24.
    3. Dunlop, David W., 1983. "Health care financing: Recent experience in Africa," Social Science & Medicine, Elsevier, vol. 17(24), pages 2017-2025, January.
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