Light backscattering by fine non-absorbing suspended particles - Mines Saint-Étienne
Journal Articles Powder Technology Year : 2000

Light backscattering by fine non-absorbing suspended particles

Abstract

In this paper, light backscattering measurements with fine silica, alumina, titanium dioxide and polystyrene latex particle suspensions for solids volume fraction φ between 10−6 and 0.3 are presented. For small φ, the measured normalized backscattered intensity can be expressed as a power law of φ with an exponent of about 0.85±0.05. Even for the smallest examined φ, multiple scattering takes place as is proved by Monte Carlo simulations and analytical calculations. For high φ, the total inverse transport mean Image *−1 free path is found to be the determining parameter. Comparison between experimental data and the diffusion approximation of the radiative transfer theory reveals good agreement for Image *−1>10 cm−1. In this case, a mean particle diameter can be determined supposing a particle size distribution (PSD) and knowing the volume fraction and relative refractive index of the particles.

Dates and versions

emse-00502941 , version 1 (16-07-2010)

Identifiers

Cite

Christoph Tontrup, Frédéric Gruy. Light backscattering by fine non-absorbing suspended particles. Powder Technology, 2000, 107 (1-2), pp.1-12. ⟨10.1016/S0032-5910(99)00079-0⟩. ⟨emse-00502941⟩
46 View
0 Download

Altmetric

Share

More