A Droplet Generator with Electronic Control of Size, Production Rate, and Charge

Abstract
A droplet generator has been developed which can produce small droplets one at a time, in groups with adjustable time intervals between droplets or in a continuous stream with controllable production rates of up to 100 per second for the smallest size. Size, charge, and time of production as well as horizontal position at the time the droplet is made may be changed electronically from droplet to droplet.Droplets are produced with nine adjustable and overlapping size ranges covering radii from 4 to 130μ. An application is described where one droplet generator is used in a cloud physics study of collisions between pairs of droplets of unequal size and charge.

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