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.