Summary
The temperature dependence of electrification of ice crystals was experimentally studied. The ice crystals were formed at various temperatures between −7.5 to −30°C in a cold chamber by seeding with a dry ice pellet. The charge on the individual ice crystals was measured during their growth and fall, by supplying horizontalDC andAC electric field. The results obtained showed that the ice crystals were negatively charged on the whole, and the negative electrification was particularly strong at temperature of −15°C which is the most favorable condition for the crystal growth of the plane type.
Zusammenfassung
Die Abhängigkeit der Elektrisierung von Eiskristallen von der Temperatur wurde experimentelle untersucht. Die Eiskristalle wurden durch Impfen mit Kohlensäure-Eis in einer Kältekammer bei verschiedenen Temperaturen zwischen −7.5 und −30°C gebildet, und die elektrische Ladung der einzelnen Eiskristalle wurde im horizontalen elektrischen Gleichstrom- und Wechselstrom-Felde im freien fall gemessen. Das Resultat zeigte, daß im allgemeinen die Eiskristalle negativ elektrisch geladen wurden und die negative Ladung besonders stark bei einer Temperatur von −15°C war, welche die beste Bedingung für das Wachstum von Eiskristall-Plättchen ist.
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Dedicated to the memory of Prof. Hans Israël.
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Magono, C., Iwabuchi, T. A laboratory experiment on the electrification of ice crystals. Arch. Met. Geoph. Biokl. A. 21, 287–298 (1972). https://doi.org/10.1007/BF02247977
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DOI: https://doi.org/10.1007/BF02247977