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Proceedings Paper

Accuracy of aerosol size measurements and the spectrum of applied laser light
Author(s): Antoni Drobnik; Krzysztof Pieszynski
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Paper Abstract

The application of laser light containing several wavelengths can be advantageous in the determination of aerosol''s particles sizes with the method of light scattering because the accuracy of such measurements can be improved. The knowledge of size and concentration of aerosol particles present in the atmosphere is of great importance in many industrial technologies and also in basic researches. There are many methods of measurements of these parameters each characterized with certain advantages and disadvantages when considered from the point of view of the sampling process duration of the measurements measurements'' range and precision. It seems that one of the best methods of finding aerosol''s concentration and size distribution is based on the analysis of scattered light 2 The essence of this method is the measurement of power of light scattered into a definite sol id angle (Fig. 1 ). Lasers are most frequent ly used as 1 ight sources i 1 luminat ing aerosol '' s part ides3 . High intensity of 1 ight and the concentration in small volumes inherent in laser beams make it possible to extend the range of measurable sizes and concentrations of aerosol particles. direction of aerosol''s flow to . . laser beam 0 - :io e 0 . . . . . . scattered''*i light Fig. 1. The illustration of the principle of operation of the apparatus for the determination of particles'' sizes

Paper Details

Date Published: 1 August 1991
PDF: 4 pages
Proc. SPIE 1391, Laser Technology III, (1 August 1991); doi: 10.1117/12.57191
Show Author Affiliations
Antoni Drobnik, Technical Univ. of Lodz (Poland)
Krzysztof Pieszynski, Technical Univ. of Lodz (Poland)

Published in SPIE Proceedings Vol. 1391:
Laser Technology III
Wieslaw L. Wolinski; Bohdan K. Wolczak; Jerzy K. Gajda; Danuta Gajda; Ryszard S. Romaniuk, Editor(s)

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