Determination of particle size by β‐back‐scattering

Abstract

A cumulative method of particle size analysis is described wherein the mass deposited from an homogeneous suspension by gravitational or centrifugal force is determined by a β‐back‐scatter thickness measurement technique. The method is applicable to compounds having an effective atomic number greater than 16, and comparisons of results obtained by this and other methods for thoria, urania, zirconia and lithopone powders are given.