Author :
Najafi, B.,Mason, E. A.,Kestin, J
Title of Article :
Improved corresponding states principle for the noble gases
Title Of Periodical :
PHYSICA
Descriptors :
Argon,Corresponding states,Helium,Krypton,Mixtures,Noble gases,Neon,Equilibrium properties,Transport properties,Xenon
Abstract :
This paper contains the background for a-complete synthesis of all properities-equilibrium as well transport- of the five nobel gases and of the 26 mixtures that can be formed with them. The synthesis is valid for the zero-density limit only,but covers the temperature range from absolute zero to the onset of ionization. The synthesis is based on a thorough revision of the two-parameter extended law of corresponding states of Kestin, Ro and Wakeham. The paper recalls the basis for the original corresponding-states principle,identifies the places at which experiment and the theory of statistical mechanics suggest deviations, and proceeds to remove them to a point where almost perfect agreement between caluation and a very large body of diverse expenmental data is achieved, in the sense deviations of experimental data from calculation are of the same order as the uncertainty in the best contemporary measurements. The basis of the revised corresponding-state principle is a set of five paraments which characterize each pair-interactio together with a fully consistent and asymptotically correct set of universal collision intergrals and functionals that appear in the rigorous theory. These are reinforced with selected quantum-mechanical calculations applied in regions where they are significant.
