Abstract
We propose to describe the impurity heat capacity of solid 3He-4He mixtures both below and above the phase separation temperature T s by an extension of the Bethe-Guggenheim approximation for the lattice gas model. It is shown that at T > T s, the temperature behavior of the heat capacity is completely defined by correlation effects in the impurity subsystem. The developed theory enables us to explain from the common stand-point the experimental data by Edwards, McWilliams, and Daunt for all concentrations of 4He and make some conclusions about the structure of second phase nuclei.
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From Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 119, No. 1, 2001, pp. 107–114.
Original English Text Copyright © 2001 by Antsygina, Chishko, Slusarev.
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Antsygina, T.N., Chishko, K.A. & Slusarev, V.A. Correlation effects in the heat capacity of separating 3He-4He solid solutions. J. Exp. Theor. Phys. 92, 93–99 (2001). https://doi.org/10.1134/1.1348465
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DOI: https://doi.org/10.1134/1.1348465