Isotherms for the He-Ar system at -130, -115, and -90°C up to 700 atm

Abstract

A Burnett apparatus was used to obtain compressibility factors and virial coefficients for helium, argon, and four mixtures at -90, -115, and -130°C. The pressures for the first two isotherms ranged from 2 to 700 atmospheres for both pure components and all mixtures. For the -130°C isotherm the pressures for the pure argon and mixtures ranged from 2 atmospheres to slightly below saturation pressure.