Nuclear Alignment and the Entropy of Liquid <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">He</mi></mrow><mrow><mn>3</mn></mrow></msup></mrow></math></span>

Bernard Weinstock; Bernard M. Abraham; Darrell W. Osborne

doi:10.1103/PhysRev.89.787

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Nuclear Alignment and the Entropy of Liquid ${He}^{3}$

Bernard Weinstock, Bernard M. Abraham, and Darrell W. Osborne

Argonne National Laboratory, Lemont, Illinois

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Phys. Rev. 89, 787 – Published 15 February, 1953

DOI: https://doi.org/10.1103/PhysRev.89.787

Abstract

By consideration of the melting pressure data it is shown that calculations implying that the nuclear spins in liquid ${He}^{3}$ are appreciably aligned at temperatures above 0.5°K are inconsistent with the assumption that the nuclear spins are randomly oriented in the solid. The expression $S_{liq} = R \ln 2 + 0.344 R T + 0.013 R T^{3}$ for the entropy of liquid ${He}^{3}$ (including the nuclear spin entropy) is consistent with the vapor pressure data from 1.0°K to 2.5°K and with the melting pressure data from 0.5°K to 1.5°K.

References (8)

I. Pomeranchuk, J. Exptl. Theoret. Phys. (U.S.S.R.) 20, 919 (1950)
E. M. Lifshitz, J. Exptl. Theoret. Phys. (U.S.S.R.) 21, 659 (1951)
K. S. Singwi, Phys. Rev. 87, 540 (1952)
Osborne, Abraham, and Weinstock, Phys. Rev. 82, 263 (1951)
Weinstock, Abraham, and Osborne, Phys. Rev. 85, 158 (1952)
Abraham, Osborne, and Weinstock, Phys. Rev. 80, 366 (1950)
de Boer, van Kranendonk, and Compaan, Physica 16, 545 (1950)
Grilly, Hammel, and Sydoriak, Phys. Rev. 75, 1103 (1949)

[c1] I. Pomeranchuk, J. Exptl. Theoret. Phys. (U.S.S.R.) 20, 919 (1950)

[c2] E. M. Lifshitz, J. Exptl. Theoret. Phys. (U.S.S.R.) 21, 659 (1951)

[c3] K. S. Singwi, Phys. Rev. 87, 540 (1952)

[c4] Osborne, Abraham, and Weinstock, Phys. Rev. 82, 263 (1951)

[c5] Weinstock, Abraham, and Osborne, Phys. Rev. 85, 158 (1952)

[c6] Abraham, Osborne, and Weinstock, Phys. Rev. 80, 366 (1950)

[c7] de Boer, van Kranendonk, and Compaan, Physica 16, 545 (1950)

[c8] Grilly, Hammel, and Sydoriak, Phys. Rev. 75, 1103 (1949)

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Nuclear Alignment and the Entropy of Liquid ${He}^{3}$

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Nuclear Alignment and the Entropy of Liquid He3

Abstract

References (8)

Nuclear Alignment and the Entropy of Liquid ${He}^{3}$