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Errors in the Determination of Particle Size Distributions Caused by coincidences in optical particle counters
Author(s) -
Raasch Jürgen,
Umhauer Heinz
Publication year - 1984
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19840010109
Subject(s) - particle (ecology) , particle size distribution , physics , particle size , distribution (mathematics) , computational physics , optics , statistical physics , chemistry , mathematics , mathematical analysis , oceanography , geology
When performing particle size analysis by scattered light, coincidences in the measuring volume of optical particle counters not only cause too small a particle concentration to be measured, but also a size distribution to be obtained which is systematically shifted towards coarser particle sizes. It is pointed out in this paper how this shift can be precalculated when the true distribution is given. The results show under which conditions a correction of the measured distribution is indispensable.