Excess transport properties of light molecules

A detailed study has been made of the excess viscosity of dense‐phase aragon, deuterium, helium‐3, helium‐4, para and normal hydrogen, neon, and nitrogen and of the excess thermal conductivity of normal hydrogen. A definite temperature dependence for the excess viscosity vs. density has been shown to exist for argon, helium‐4, hydrogen, and nitrogen and to be indicated for deuterium. The existing thermal conductivity data for hydrogen have been examined. A theoretical analysis for the qualitative behavior of excess thermal conductivity is given. The critical point viscosity values for all the species are given. Graphs, together with references to 1‐atm. data, are presented for computation of the transport properties.