Simulation of LDA and PDA measuring techniques in the nanometer particle size range

Lenard Vamos; Peter Jani

doi:10.1117/12.622913

8 October 2005 Simulation of LDA and PDA measuring techniques in the nanometer particle size range

Lenard Vamos, Peter Jani

Proceedings Volume 5948, Photonics Applications in Industry and Research IV; 59481Q (2005) https://doi.org/10.1117/12.622913
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

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.

Citation Download Citation

Lenard Vamos and Peter Jani "Simulation of LDA and PDA measuring techniques in the nanometer particle size range", Proc. SPIE 5948, Photonics Applications in Industry and Research IV, 59481Q (8 October 2005); https://doi.org/10.1117/12.622913

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