Investigations on the Atmospheric Dispersion of Clouds Containing Charged Tracers

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Abstract
Many different sensor systems are used in experimental studies of atmospheric dispersion and the results obtained with each of them need careful interpretation. This paper was motivated by an unusual sensor system, in which charged particles are used as a tracer material. Earlier results for special configurations of charge are generalized, and lead to a condition which ensures conservation of total charge and a negligible influence of image charges. The remainder of the paper discusses some basic physics of charged clouds dispersing in turbulent flow and shows (partly on the basis of exact results for simple models) that order-of-magnitude, and other, results for clouds of passive tracer can be extended rather simply to charged clouds. A principal conclusion of the work is that the sensor system's use should be extended and certain suggestions are made for future work.

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