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Preliminary Thermodynamic Properties of Helium-3 between 1° and 100°K

  • R. M. Gibbons
  • C. McKinley
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 13)

Abstract

The properties of the isotope He3 differ considerably from those of He4 at low temperatures because of quantum effects arising from the differences in their masses and in the statistics obeyed by the two molecules, At higher temperatares, where both substances behave classically, their properties become identical. Most of the previous work done on He3 has been in the liquid region in an attempt either to observe superfluid behavior or to establish the vapor-pressure curve as a primary temperature standard from 0.2° to 3.3°K. This study presents the P-V-T properties and C v for He3 in the temperature range from 4° to 20°K at pressures of up to 150 atm. These data and some of Keller’s data [1] have been fitted to a modified Strobridge equation and the derived thermodynamic properties S, H, and U have been obtained using this equation of state. In addition, using a quantum version of corresponding states, the P-V-T surface entropy and enthalpy have been predicted from 20° to 100°K. The correlation agrees well with the experimental results between 12° and 20°K. Combining the two regions, the properties of He3 have thus been determined from 1° to 100°K.

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References

  1. 1.
    W. Keller, Phys. Rev., 98:1571 (1955).CrossRefGoogle Scholar
  2. 2.
    R. H. Sherman and F. J. Edeskuty, An. Phys., 9:522 (1960).CrossRefGoogle Scholar
  3. 3.
    E. Kerr, Phys. Rev., 96:554 (1954).CrossRefGoogle Scholar
  4. 4.
    R. H. Sherman, Critical Phenomena, NBS Misc. Publ. No. 273 (1966), p. 7.Google Scholar
  5. 5.
    A. L. Gosman, J. Hust, and R. McCarty, NBS Tech Note 8308 (1964).Google Scholar
  6. 6.
    R. D. McCarty and R. B. Stewart, in: Advances in Thermophysical Properties at Extreme Temperature and Pressure, ASME, New York (1965), p. 84.Google Scholar
  7. 7.
    D. B. Mann, NBS Tech Note 154 (Jan. 1962).Google Scholar
  8. 8.
    R. M. Gibbons (to be published).Google Scholar
  9. 9.
    J. O. Hirschfeider, C. F. Curtis, and R. B. Bird, The Molecular Theory of Gases and Liquids, John Wiley & Sons, New York (1960), p. 1110.Google Scholar
  10. 10.
    T. R. Roberts, R. H. Sherman, and S. G. Sydoriak, NBS J. Res., 68A:547, 559, 567, 579 (1964).Google Scholar
  11. 11.
    B. M. Abraham, B. Weinstock, and D. W. Osborne, Phys. Rev., 98:561 (1955).CrossRefGoogle Scholar
  12. 12.
    R. M. Gibbons and D. I. Nathan, “Thermodynamic Properties of Helium-3,” AF Contract 33(615)-2870, Material Research Laboratory, Wright-Patterson AFB (to be published).Google Scholar
  13. 13.
    R. F. Bukacek, private communication.Google Scholar
  14. 14.
    J. Hust and A. Gosman, in: Advances in Cryogenic Engineering, Vol. 9, Plenum Press, New York (1963), p. 227.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • R. M. Gibbons
    • 1
  • C. McKinley
    • 1
  1. 1.Air Products and Chemicals, Inc.AllentownUSA

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