Thermodynamic Properties of Liquid ~(3)He-~(4)He Mixtures Between 0-10 bar below 1.5 K

摘要

The thermodynamic properties of liquid ~(3)He-~(4)He mixtures at pressures of up to 10 bar and temperatures below 1.5 K are determined. The calculations are based on previously determined thermodynamic properties of ~(3)He-~(4)He mixtures at saturated (zero) pressure, and available experimental measurements of the molar volume, which are used to determine an expression for the molar volume. Since available experimental data for mixtures at higher pressures are restricted to low temperatures (below about 0.7 K), the calculated molar volumes at high pressure and high temperature are largely based on pure ~(3)He and pure ~(4)He data.