All experimental data of the viscosity (71, the second virial coefficient ( 6 ) and the self-diffusion (pD) (103 experimental points altogether) are approximated in the frame of their experimental ermm by means of an effective isotropic ("4) potential with temperaturedependent p m e t e r s . The UF6 gas at given temperature ( T ) is considered as one vibrationally excited state with a sire avenged over all excitations. The equilibrium distance (r,) increases with temperature according to the vibrational excitation of the molecule. The potential depth w'ell ( E ) decreases with enlargement of the equilibrium distance in order to keep the long range forces unchanged.Pxameters of the ground state-ground state interactions (T = 0 K) are derived by means of a minimiwtion of the sum of the squared deviations between experimental and calculated pmpertres normalized to the expenmental error. Appmxm" formulae for the temperature dependences rhff(T). B ( T ) , q ( T ) and p D ( T ) lo be used for accurate and easy calculations are given. A comparison with available (n-6) potentials is made.defining E and r, is described as finding a cross point of calculated B , q, pD and thermal conductivity as a function of E and r,. Nowadays such a procedure may be considered as too simplified, but it produces a good fit of measured 7 and B for mixtures w6-MoF6 and uF6-w&,, where the parameters of the potentia] are calculated as
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.