Clusius and Dickel Column Constants for a Gas consisting of Hard Spherical Molecules

Abstract

The theory of the Clusius and Dickel hot wire thermal diffusion column as developed by Furry and Jones has been extended to take into account the temperature dependence of the gas coefficients for a gas whose molecules consist of hard rigid spheres. Tables for the shape factors h, k_c and k_d have been constructed by the method of numerical integration. It is found that the column constants H, K_c and K_d depend strongly on the law of molecular interaction for the gas. The expressions obtained for the constant H are found to agree closely with the experimental data of Nier on helium.