Thermal conductivity of neon—argon mixtures at low temperatures (90–273 K)

Abstract

The thermal conductivity of neon, argon, and of their mixtures containing 10, 40, 60, 80, 87.5 and 95.1 percent of neon is measured in a hot-wire cell in the temperature range 90–273 K within a maximum estimated random error of ±1%. The experimental data at each composition are represented by a cubic polynomial in temperature. The experimental results are compared with the predictions of kinetic theory based on Lennard-Jones (12-6), exp-six, and Morse intermolecular potentials. Two schemes of computing mixture conductivity values and based on Sutherland-Wassiljewa form are examined on the basis of present experimental conductivity values.