Evolution of the Clausius–Mossotti function of noble gases and nitrogen, at moderate and high density, near room temperature

摘要: The static dielectric constant of noble gases (excepting xenon) and nitrogen has been measured near room temperature in a large range pressures (up to 12 kbar for He, Ne, Ar, N2). Clausius–Mossotti function (C.M.) deduced, when density data are known, with precision 10−3 the moderate pressure 3×10−3 above 1.0 kbar. Values first, second, some cases third virial coefficient have determined. We found, agreement previous results obtained at low pressure, that light heaviest ones show different behavior their C.M. terms density. For He second is negative; Kr, N2 it positive, but goes through maximum then decreases. effect on Ar approximately drop 3.5% These compared predictions molecular theories properti...