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Dependence of the Ion-Aerosol Equivalent Attachment Coefficient on the Ratio of Polar Conductivities in a Steady State

Category: Articles

Volume: 11 | Issue: 3 | Pages: 211-217
DOI: 10.4209/aaqr.2010.11.0100
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Jaan Salm, Eduard Tamm

  • Institute of Physics, University of Tartu, 18 Ülikooli Street, Tartu, 50090, Estonia


The article discusses certain theoretical problems of the diffusion charging of aerosol particles in a bipolar ion environment. The ratio of polar conductivities, induced by cluster ions of either polarity, may vary in a wide range. New results are obtained for the calculation algorithm of the ion-aerosol equivalent attachment coefficient in a steady state. Applying the Poisson sum formula, an analytical approximation equation is derived for the ion-aerosol equivalent attachment coefficient as a function of the ratio of polar conductivities and of the particle diameter. This equation could simplify calculations of ion-aerosol interaction characteristics in the range of sufficiently large particle diameters. A possibility for the creation of a related approximation equation for the range of smaller particle diameters is briefly outlined.


Aerosol Ion Attachment coefficient

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