Abstract
Collision efficiencies are shown for 5- and 10-micron droplets colliding with 30-, 40-, and 50-micron drops. The charge on the drop is always positive, but the sign of the charge on the droplet is alternately positive and negative. The magnitude of the charge on the droplet extends from zero to 10−14 coulomb. The calculations are also extended to include electric field intensities of 0, 900, 2100, and 3600 v/cm oriented at angles of 0°, 90°, and 180° with respect to the direction of fall of the drop. The electrical effects were found to influence collision efficiencies only when the droplet charges were greater than about 10−16 coulomb or when the electric field intensity exceeded 900 v/cm. The pertinence of the calculations to the physics of electrified clouds is briefly discussed.
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