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Diffusion in helium-noble gas mixtures

Author

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  • Wahby, A.S.M.
  • Abdel-Rahman, M.
  • Los, J.

Abstract

Diffusion coefficients have been measured of almost Lorentzian binary mixtures of He and the noble gases Ne, Ar, Kr and Xe. Measurements have been performed in the temperature range from 237 K to 420 K. The agreement with other experimental data is very satisfactory. A comparison with experimental thermal diffusion data on the same mixtures shows that the relation for Lorentzian mixtures. αL=2−∂ In D12∂ In Tp is quite accurate for the heavier helium-noble gas mixtures. Comparison of the experimentally determined function 2−∂ In D12∂ In Tp with theoretical calculations for several model potentials shows a semi-quantitative agreement between theory and experiment. The experimental curves indicate a great similarity between the interaction potentials of helium with the different noble gas atoms.

Suggested Citation

  • Wahby, A.S.M. & Abdel-Rahman, M. & Los, J., 1982. "Diffusion in helium-noble gas mixtures," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 112(1), pages 214-224.
    • Handle: RePEc:eee:phsmap:v:112:y:1982:i:1:p:214-224
    DOI: 10.1016/0378-4371(82)90215-1
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    References listed on IDEAS

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    1. Santamaría, C.M. & Savirón, J.M. & Yarza, J.C., 1975. "Law of corresponding states and thermal-diffusion factor of Ne Kr and Ar Kr mixtures," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 83(3), pages 615-621.
    2. Santamaría, C.M. & Savirón, J.M. & Yarza, J.C., 1976. "Law of corresponding states and thermal-diffusion factor of He-Ar mixtures from two-bulb measurements," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 84(1), pages 212-215.
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    1. Wahby, A.S.M. & Abdel-Rahman, M. & Los, J., 1982. "Diffusion in helium-noble gas mixtures," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 112(1), pages 225-234.
    2. Santamaría, C.M. & Savirón, J.M. & Yarza, J.C. & Carrión, J.A., 1977. "Isotopic thermal diffusion factors of the noble gases," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 89(1), pages 90-96.
    3. Santamaría, C.M. & Savirón, J.M. & Yarza, J.C., 1976. "Law of corresponding states and thermal-diffusion factor of He-Ar mixtures from two-bulb measurements," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 84(1), pages 212-215.

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