Precipitation of submicron charged particles in human lung airways |
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Authors: | C P Yu K Chandra |
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Institution: | (1) Department of Engineering Science, Aerospace Engineering and Nuclear Engineering, State University of New York at Buffalo, 14214 Buffalo, NY, U.S.A. |
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Abstract: | Precipitation of charged particles in a tube by their own space charge is investigated theoretically, when the number density
of the particles is large enough so that the potential is a smooth function given by Poisson’s equation, and when the number
density is small so that only the image force is important. These two approaches have been applied to the data given by Weibel
for the human lung, to determine the deposition probabibilities at different generations for submicron particles when the
particle density is 1×105 particles/cm3. The results indicate that the electrostatic dispersion can only lead to a small effect on the lung deposition, the predominant
effect is due to the image force exerted on the particles. |
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Keywords: | |
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