Light scattering by ellipsoidal particles in solution

Abstract

The angular dependence of the intensity of light scattered by solutions of ellipsoidal macromolecules is computed using the assumptions of the Rayleigh-Gans theory. By comparing light scattering measurements with these results, it should be possible to characterize such molecules by three size parameters rather than the usual two.

Light, Neutron, X-ray Scattering, and Conductivity Measurements on Aqueous Dodecyltrimethylammonium Bromide/1-Hexanol Solutions

“…The Rayleigh ratio used for the toluene standard was R′ st ) 13.76 × 10 -4 m -1 which was obtained by interpolation of different values given in the literature. [16][17][18][19] The Rayleigh ratios and the diffusion coefficients of the samples were determined for seven angles θ from 60 to 120°, and no angular dependence was detected. The error of the average value is less than 2%.…”

Aggregation and gelation of micellar casein particles

“…We used 0.189 for the refractive index increment of casein at both wavelengths and we used a toluene standard with Rayleigh ratio 2.79 × 10 −5 cm −1 at 532 nm and 1.02 × 10 −5 cm −1 at 685 nm [31][32][33]. When interactions are not negligible one determines the apparent molar mass as: m a = I r (q → 0)/KC.…”

Volumetric data from light scattering and perturbation theory for carbon tetrachloride, chloroform and dichloromethane

“…20 The i T /a p 2 ratios were calculated from these data by eqn. (19). The uncertainty of these data coming from light scattering experiments is less than ^0.5 ] 10~4 m3 ¡C2 J~1.…”