Variation of the polarizability of noble gases with density

Density data for helium and neon up to 10 kbar at 25 °C are reported. The earlier experimental results for the Clausius–Mossotti function have been extended to higher densities for the whole noble gas series (i.e., up to reduced density ρ*?1). These results, combined with the machine calculation of the dipole–induced-dipole contribution with respect to density for a Lennard-Jones fluid, allow the determination of the mean individual atomic polarizability of noble gases as a function of density. In an appropriate system of units, the values of the mean polarizability fall on a single universal curve for all the reduced temperatures investigated.