Compressibility, Thermal Expansion, and Other Properties of Helium-Three

G. C. Straty; E. D. Adams

doi:10.1103/PhysRev.169.232

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Compressibility, Thermal Expansion, and Other Properties of Helium-Three

G. C. Straty^* and E. D. Adams

Physics Department, University of Florida, Gainesville, Florida 32601

^*Present address: National Bureau of Standards, Boulder, Colo.

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Phys. Rev. 169, 232 – Published 5 May, 1968

DOI: https://doi.org/10.1103/PhysRev.169.232

Abstract

Measurements of pressure versus temperature of solid ${He}^{3}$ have been made for various constant volumes between 17.6 and 24.7 ${cm}^{3}$ /mole, in the temperature range from 0.35°K to the melting point. Use was made of a sensitive capacitive strain gauge, which is described. From the pressure, the compressibility and thermal expansion coefficient are obtained. By extending the isochores into the liquid region, these quantities are also obtained for the liquid at melting. The compressibilities of the solid and liquid in equilibrium at the melting curve are nearly equal. The expansion coefficient of the solid is positive in the range investigated. Comparison with specific heats and with other results is made, and values of the Grüneisen $γ$ and Debye $θ$ are obtained. A discontinuity in volume of about 0.1 ${cm}^{3}$ /mole at the bcc-hcp phase transition down to 0.35°K was found.

References (24)

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E. D. Adams, G. C. Straty, and E. L. Wall, Phys. Rev. Letters 15, 549 (1965)
J. Jarvis and H. Meyer, in Proceedings of the Tenth International Conference on Low-Temperature Physics, Moscow, 1966 (Proizvodstrenno-Izdatel'skii Kombinat, VINITI, Moscow, 1967)
G. C. Straty and E. D. Adams, Phys. Rev. 150, 123 (1966)
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M. F. Panczyk, R. A. Scribner, G. C. Straty, and E. D. Adams, Phys. Rev. Letters 19, 1102 (1967)
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[c1] J. Wilks, Liquid and Solid Helium (Oxford University Press, New York, 1967)

[c2] E. R. Grilly and R. L. Mills, Ann. Phys. (N. Y.) 8, 1 (1959)

[c3] R. L. Mills, E. R. Grilly, and S. G. Sydoriak, Ann. Phys. (N. Y.) 12, 41 (1961)

[c4] A. F. Schuch, E. R. Grilly, and R. L. Mills, Phys. Rev. 110, 775 (1958)

[c5] A. F. Schuch and R. L. Mills, Phys. Rev. Letters 6, 596 (1961)

[c6] J. P. Franck, Phys. Rev. Letters 7, 435 (1961)

[c7] E. C. Heltemes and C. A. Swenson, Phys. Rev. 128, 1512 (1962)

[c8] D. O. Edwards, A. S. McWilliams, and J. G. Daunt, Phys. Letters 1, 218 (1962)

[c9] H. H. Sample and C. A. Swenson, Phys. Rev. 158, 188 (1967)

[c10] J. S. Dugdale and J. P. Franck, Phil. Trans. Roy. Soc. London 257, 1 (1964)

[c11] J. H. Hetherington, W. J. Mullin, and L. H. Nosanow, Phys. Rev. 154, 175 (1967)

[c12] L. Goldstein, Phys. Rev. 159, 120 (1967)

[c13] E. D. Adams, G. C. Straty, and E. L. Wall, Phys. Rev. Letters 15, 549 (1965)

[c14] J. Jarvis and H. Meyer, in Proceedings of the Tenth International Conference on Low-Temperature Physics, Moscow, 1966 (Proizvodstrenno-Izdatel'skii Kombinat, VINITI, Moscow, 1967)

[c15] G. C. Straty and E. D. Adams, Phys. Rev. 150, 123 (1966)

[c16] R. H. Sherman, S. G. Sydoriak, and T. R. Roberts, J. Res. Natl. Bur. Std. 68A, 579 (1964)

[c17] F. G. Brickwedde, H. Van Dijk, M. Durieus, J. R. Clement, and J. K. Logan, J. Res. Natl. Bur. Std. 64A, 1 (1960)

[c18] R. H. Sherman and F. J. Edeskuty, Ann. Phys. (N. Y.) 9, 522 (1960)

[c19] R. C. Pandorf and D. O. Edwards (private communication)

[c20] E. R. Grilly, in Proceedings of the Tenth International Conference on Low-Temperature Physics, Moscow, 1966 (Proizvodstrenno-Izdatel'skii Kombinat, VINITI, Moscow 1967)

[c21] E. R. Grilly (private communication)

[c22] M. F. Panczyk, R. A. Scribner, G. C. Straty, and E. D. Adams, Phys. Rev. Letters 19, 1102 (1967)

[c23] C. Boghosian, H. Meyer, and J. E. Rives, Phys. Rev. 146, 110 (1966)

[c24] F. W. de Wette, L. H. Nosanow, and N. R. Werthamer, Phys. Rev. 162, 824 (1967)

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Compressibility, Thermal Expansion, and Other Properties of Helium-Three

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