The pressure dependence of the mutual diffusion coefficients of binary mixtures of helium with ten other gases at 300 K: tests of Thorne's equation

The pressure dependences of the binary diffusion coefficients of ten systems containing helium have been measured at constant composition at 300 K. The results are compared with the Thorne—Enskog theory for moderately dense gases of rigid spheres, and a previously suggested empirical extension to the theory tested.