Pressure dependencies of the thermal diffusion factors, αT, of nine helium–fluoroethane systems at 300 K: Prediction of the variation with temperature of the limiting diffusion coefficients of these systems from αT values at zero pressure

Abstract

Thermal diffusion factors, αT, are reported at 300 K for nine binary systems consisting of helium and a fluoroethane. The data are extrapolated to zero pressure to test the approximate theory of Oost et al. for the pressure dependence of αT. The zero pressure values of αT are used to predict the temperature dependence of the binary diffusion coefficients of these systems.