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Title:
Pressure-volume-temperature relations in liquid and solid4He
Authors:
Grilly, E. R.
Affiliation:
AA(Los Alamos Scientific Laboratory, University of California)
Publication:
Journal of Low Temperature Physics, Volume 11, Issue 1-2, pp. 33-52 (JLTP Homepage)
Publication Date:
04/1973
Origin:
SPRINGER
DOI:
10.1007/BF00655035
Bibliographic Code:
1973JLTP...11...33G

Abstract

PVT relations in liquid and solid4He near the melting curve were measured over 0.3 2.0 K with a cell that used diaphragms for pressure and volume variation. The results were largely self-consistent and were essentially in agreement with the most careful previous work. The high values and strong temperature dependence of thermal expansion in the bcc solid resembled that of a liquid, but there was no evidence to substantiate some previous indications of premelting anomalous heat-capacity behavior. The phase diagram was examined carefully, and under equilibrium conditions the measurements led to good correlations. However, it seems improbable that PVT relations can be connected with heat-capacity data through a simple Grüneisen parameter γ.
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