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Proceedings Paper

Methods of laser diffraction measurement for nonspherical particles
Author(s): Tongsheng Mou; Xinying Zhou
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Paper Abstract

The methods based on the laser diffraction are more noticeable in the measurement of particle size distribution. In present laser particle sizing system, particles are treated as a group of spheres with various diameters, in order to inverse the particle size distribution. Actually, the shapes of most measured particles are non-spherical, so obvious differences would occur in the assumption of sphere. In this paper, after the description of the principle of laser particle sizing, problems existing in using above methods to measure the non- spherical particles are discussed. Then it is presented that the measurements based on the spherical, linear, rectangular particle diffraction would be applied to inverse the particle size distribution, according to the shape of measured particles. Through the measurement of samples, it is indicated that the results measured are consistent with those by the auto-electron microscope. In additionally, the values and diagrams obtained by these methods are presented, and the errors with different diffraction models are discussed in this paper.

Paper Details

Date Published: 3 October 2000
PDF: 4 pages
Proc. SPIE 4220, Advanced Photonic Sensors: Technology and Applications, (3 October 2000); doi: 10.1117/12.401731
Show Author Affiliations
Tongsheng Mou, Zhejiang Univ. (China)
Xinying Zhou, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 4220:
Advanced Photonic Sensors: Technology and Applications
Jinfa Tang; Chao-Nan Xu; Haizhang Li, Editor(s)

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