The pressure dependence of the binary diffusion coefficients of the systems He–Ar, He–N2, He–O2, and He–CO2 at 300 and 323 K: Tests of Thorne’s equation

A Loschmidt cell has been used to measure the pressure dependence at two temperatures of the binary diffusion coefficients of four systems containing helium. The results are used (a) to show that the Thorne–Enskog theory for moderately dense gases is not adequate to describe diffusion in these systems and (b) to indicate that a temperature dependence of the Thorne correction could not be detected.