Charge Transport Through an Aerosol Cloud

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Abstract
The system of coupled equations which governs the electric field, ion densities, and aerosol charge in a quiescent cloud between semi‐infinite charged plates is solved numerically for the case when ionization is confined to a layer near each plate and the case of volume ionization. The results predicted by the governing equations are verified experimentally. The electrical stress produced in the case of volume ionization tends to stabilize the fluid whereas surface ionization can produce hydrodynamic instability. The electroconvective instability produced by surface ionization is easily observable both visually and electrically. If turbulence is generated in the chamber by mechanical means, the turbulent transfer of charge will oppose the conduction current in the case of volume ionization and enhance the total current in the case of surface ionization.

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