Refractive index and Lorentz-Lorenz function of xenon liquid and vapour

Abstract

Refractive index measurements have been carried out on xenon liquid and vapour in coexistence from -59.0°c to 16.5°c, and also on fluid xenon at temperatures above the critical point (16.59°c). The results of over 500 measurements indicate that the Lorentz-Lorenz function (n2-1)/(n2+2)ρ remains constant to within ±3% over the whole density range studied (0.001 to 0.02 mol cm-3) and that at the critical point nc = 1.3799±0.0008 and LLc = 10.5±0.1 cm3 mol-1 (λ = 5893 Angstrom).