Rayleigh scattering depolarization ratio and molecular polarizability anisotropy for gases

Abstract

The depolarization ratio for Rayleigh scattering by 39 molecular species are reported for λ= 488.0, 514.5 and 632.8 nm. The literature has been critically surveyed for refractivities which are used in conjunction with the observed depolarization ratios to yield the anisotropy of the molecular polarizability of the molecules. Results are given for CO₂, OCS, CS₂, C₂H₆, C₃H₈, isobutane, cyclopropane, C₂H₄, allene, C₂H₂, methylacetylene, dimethylacetylene, spiropentane, cyclohexane, C₆H₆, C₆H₅F, 1,3,5-C₆H₃F₃, C₆F₆, CH₃CN, (CH₃)₂CO, CH₃F, CH₂F₂, CHF₃, CH₃Cl, CH₂Cl₂, CHCl₃, CF₂Cl₂, CH₃Br, CH₃I, t-butylchloride, t-butylbromide, ethylene oxide, (CH₃)₂O, (CH₃)₂S, H₂S, SO₂, N₂, N₂O and CO.