COMMON EQUATION OF STATE AND DIFFERENTIAL THERMODYNAMIC CHARACTERISTICS OF THE LIQUID He-3 - He-4 MIXTUES

A number of important thermodynamic characteristics of the liquid He-3 - He-4 isotope solutions for the temperatures 2,25...4,2 K and pressures 0...10 Mpa is calculated basing on the obtained at the NSC KIPT experimental data and common equation of state built on basis of these data. Engineering tables are calculated for molar volume (V), density (rho), isobaric thermal expansion coefficient (alpha), isothermal compressibility factor (gamma) and compressibility factor (Z) with temperature and pressure increment sufficient for linear interpolation of the data. Obtained results have a great value for thermal calculations of the low-temperature cryostats, basing on the method of He-3 dissolving in He-4.