The Fragmentation and Electrification of Freezing Drops

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  • 1 McLennon Physical Laboratories, University of Toronto, Canda
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Abstract

Drops in the size range 1.2 to 1.9 mm were frozen while floating in a nitrogen stream. Frequency of split-ting and cracking was found to be 80–90% when the gas was dry and 57% when it was saturated with water vapor. During freezing, about half of the drops acquired charges (of both signs) in the order of several tenths of a picoColumb and the same proportion (in separate experiments) produced splinters, giving an average of σ10 splinters per frozen drop.

Abstract

Drops in the size range 1.2 to 1.9 mm were frozen while floating in a nitrogen stream. Frequency of split-ting and cracking was found to be 80–90% when the gas was dry and 57% when it was saturated with water vapor. During freezing, about half of the drops acquired charges (of both signs) in the order of several tenths of a picoColumb and the same proportion (in separate experiments) produced splinters, giving an average of σ10 splinters per frozen drop.

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