The Temperature Dependence of the Self-Diffusion Coefficients of Argon, Neon, Nitrogen, Oxygen, Carbon Dioxide, and Methane

Edward B. Winn

doi:10.1103/PhysRev.80.1024

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The Temperature Dependence of the Self-Diffusion Coefficients of Argon, Neon, Nitrogen, Oxygen, Carbon Dioxide, and Methane

Edward B. Winn^*

Department of Physics, University of Minnesota, Minneapolis, Minnesota

^*Present address: Acetate Research Division, E. I. du Pont de Nemours and Company, Inc., Waynesboro, Virginia.

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Phys. Rev. 80, 1024 – Published 15 December, 1950

DOI: https://doi.org/10.1103/PhysRev.80.1024

Abstract

The self-diffusion coefficients of A, Ne, $N_{2}$ , $O_{2}$ , C $O_{2}$ , and C $H_{4}$ have been measured as functions of the temperature: A, Ne, $N_{2}$ , and $O_{2}$ in the range — 196°C to 80°C, ${CO}_{2}$ in the range — 78.5°C to 80°C, and C $H_{4}$ in the range — 183°C to 80°C. The experimental figures have been compared with values calculated on the assumption that the molecular interaction potential is of the form

$V (r) = 4 ε [- {(\frac{r_{0}}{r})}^{6} + {(\frac{r_{0}}{r})}^{12}]$ With the exception of the lowest point for methane, all figures are in essential agreement with theory.

References (7)

S. Chapman and T. G. Cowling, The Mathematical Theory of Non-Uniform Gases (Cambridge University Press, London, 1939)
Hirschfelder, Bird, and Spotz, J. Chem. Phys. 10, 968 (1948)
Hirschfelder, Bird, and Spotz, Chem. Rev. 44, 205 (1949)
E. P. Ney and F. Armistead, Phys. Rev. 71, 14 (1947)
F. Hutchinson, J. Chem. Phys. 17, 1081 (1949)
E. B. Winn, Phys. Rev. 74, 698 (1948)
E. B. Winn and E. P. Ney, Phys. Rev. 72, 77 (1947)

[c1] S. Chapman and T. G. Cowling, The Mathematical Theory of Non-Uniform Gases (Cambridge University Press, London, 1939)

[c2] Hirschfelder, Bird, and Spotz, J. Chem. Phys. 10, 968 (1948)

[c3] Hirschfelder, Bird, and Spotz, Chem. Rev. 44, 205 (1949)

[c4] E. P. Ney and F. Armistead, Phys. Rev. 71, 14 (1947)

[c5] F. Hutchinson, J. Chem. Phys. 17, 1081 (1949)

[c6] E. B. Winn, Phys. Rev. 74, 698 (1948)

[c7] E. B. Winn and E. P. Ney, Phys. Rev. 72, 77 (1947)

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The Temperature Dependence of the Self-Diffusion Coefficients of Argon, Neon, Nitrogen, Oxygen, Carbon Dioxide, and Methane

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References (7)

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