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Proceedings Paper

Range of validity of the Fraunhofer approximation in the estimation of particle size distributions from light diffraction
Author(s): Javier Vargas-Ubera; D. M. Gale; J. Felix-Aguilar
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Paper Abstract

The inverse problem of retrieving the particle size distribution from the intensity of the diffracted field is solved using two numerical methods, the Chin-Shifrin algorithm and Singular Value Decomposition. The theory used in the inversion is based on the Fraunhofer approximation. We used the Lorenz-Mie theory to generate the intensity data produced from a series of normal size distributions. The distributions scan the interval of radius 0.1 micrometers < a < 17 micrometers . From our result we can set limits to the interval of particle size where the Fraunhofer approximation is valid.

Paper Details

Date Published: 14 August 2001
PDF: 4 pages
Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); doi: 10.1117/12.437165
Show Author Affiliations
Javier Vargas-Ubera, Instituto Nacional de Astrofisica Optica y Electronica (Mexico)
D. M. Gale, Instituto Nacional de Astrofisica Optica y Electronica (Mexico)
J. Felix-Aguilar, Instituto Nacional de Astrofisica Optica y Electronica (Mexico)


Published in SPIE Proceedings Vol. 4419:
4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications
Vera L. Brudny; Silvia A. Ledesma; Mario C. Marconi, Editor(s)

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