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The Ejection of Ice Splinters by Freezing Droplets of Supercooled Water

M. J. GayDepartment of Pure and Applied Physics, University of Manchester, Institute of Science and Technology, Manchester, England M60 1QD

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Abstract

Experiments have been conducted in an effort to determine whether small supercooled water drops eject ice splinters when they freeze under conditions which may be representative of those occurring in clouds. An electric field has been used to discriminate between primary and secondary freezing products.

It is concluded that supercooled drops in the radius range 12 to 30 µm may eject ice splinters on freezing. However, the fraction of them that do so is small and the average number of splinters per freezing event is estimated to he about 0.2. This is consistent with the observation of Bader et al.,. (1974).

Abstract

Experiments have been conducted in an effort to determine whether small supercooled water drops eject ice splinters when they freeze under conditions which may be representative of those occurring in clouds. An electric field has been used to discriminate between primary and secondary freezing products.

It is concluded that supercooled drops in the radius range 12 to 30 µm may eject ice splinters on freezing. However, the fraction of them that do so is small and the average number of splinters per freezing event is estimated to he about 0.2. This is consistent with the observation of Bader et al.,. (1974).

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