期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1977
卷号：74
期号：11
页码：4739-4743
DOI：10.1073/pnas.74.11.4739
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The significant structure theory of liquids is successfully applied to the quantum liquid 3He. The partition function uses the Debye partition function for the solid-like molecules and the Fermi-Dirac partition function for the gas-like degrees of freedom. To evaluate the gas-like partition function, numerical calculations are performed and some integral functions appearing in the equation of state of the ideal Fermi-Dirac gas are tabulated. In the solid-like molecules, the molar volume Vs depends on the temperature, and a linear dependence is used. The thermodynamic properties, such as molar volume, vapor pressure, entropy, heat capacity, and the critical constants as well as the surface tension of liquid 3He are calculated. The agreement between theory and experiment is satisfactory.
