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Proceedings Paper

Simulation of LDA and PDA measuring techniques in the nanometer particle size range
Author(s): Lenard Vamos; Peter Jani
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Paper Abstract

A planar phase Doppler system and a photon correlation LDA system was simulated regarding to particle size measurement below 150nm size range. Light scattering on Gaussian beams was simulated by Lorenz-Mie theory (LMT) and superimposed on the detectors' surface. The planar PDA system was found unable to size measurement in this range. Particle size measurement from photon correlated LDA signal is discussed particularly. Adaptability of method developed for visibility measuring was investigated. We established that the total number of photon counts from passing particles is a good estimator of particle size in this size range, because scattered intensity does not oscillate with the size changes. The two particle sizing methods were compared. The photon counting method was found simpler and more sensitive. Dependence on particle trajectory is investigated and found it is comparable for the two methods.

Paper Details

Date Published: 8 October 2005
PDF: 9 pages
Proc. SPIE 5948, Photonics Applications in Industry and Research IV, 59481Q (8 October 2005); doi: 10.1117/12.622913
Show Author Affiliations
Lenard Vamos, Research Institute for Solid State Physics and Optics (Hungary)
Peter Jani, Research Institute for Solid State Physics and Optics (Hungary)


Published in SPIE Proceedings Vol. 5948:
Photonics Applications in Industry and Research IV
Ryszard S. Romaniuk; Stefan Simrock; Vladimir M. Lutkovski, Editor(s)

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