The Entropy of LiquidHe3

1 March 1953

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 89 (5), 1038-1040
https://doi.org/10.1103/physrev.89.1038

Abstract

The vapor pressure of liquid

{He}^{3}

, as measured by Abraham, Osborne, and Weinstock, is found to fit the following equation:

{log}_{10} (\frac{P_{mm}}{T^{\frac{5}{2}}}) = 2.3126 - \frac{1.1561}{T} - 0.25254 T - 0.00667 T^{2} + 0.05266 T^{3} - 0.01210 T^{4},

up to 2.5°K. The entropy curve of the liquid derived from this equation goes smoothly to zero at 0°K, and in fact lies very close to the theoretical curve for a Fermi-Dirac smoothed potential liquid below 1°K. Hence the vapor pressure data furnish no evidence for the existence of a transition below 1°K.

Keywords

This publication has 8 references indexed in Scilit:

Nuclear Alignment and the Entropy of Liquid ${He}^{3}$
Physical Review B, 1953
Entropy and Specific Heat of LiquidHe3
Physical Review B, 1952
The Melting Pressure of ${He}^{3}$
Physical Review B, 1952
The Vapor Pressure, Critical Point, Heat of Vaporization, and Entropy of Liquid ${He}^{3}$
Physical Review B, 1950
The equation of state of gaseous Hϵ3
Physica, 1950
Approximate Densities of Liquid ${He}^{3}$ between 1.27° and 2.79°K
Physical Review B, 1949
Possibility of a Phase Transition in the Pure Helium Isotope of Mass 3
Nature, 1949
Condensation of Pure ${He}^{3}$ and Its Vapor Pressures between 1.2° and Its Critical Point
Physical Review B, 1949

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