Abstract

A polydisperse sample can be statistically represented by a log-normal distribution having two parameters, viz., geometrical standard deviation σ_g and modal size parameter X_m. In an earlier paper a method to determine σ_g from the shift in the angular position of the maximum in Iθ² vs θ plot was discussed. The present paper describes a method of determining the other parameter X_m from the polarization measurement in the forward direction. This can be achieved by comparing the angular position of maxima in P (degree of polarization) vs θ with that of the similar curve of a single particle. Certain experimental results are also discussed. This method is expected to be useful in routine particle size analysis.

© 1979 Optical Society of America

Estimation of particle size distributions from forward scattering data

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Comparison of optically derived particle size distributions: scattering over the full angular range versus diffraction at near forward angles

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