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Charge transfer associated with temperature gradients in ice crystals grown in a diffusion chamber
Author(s) -
Latham J.
Publication year - 1964
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49709038505
Subject(s) - deflection (physics) , charge (physics) , ice crystals , sublimation (psychology) , cloud chamber , diffusion , electric field , quartz , materials science , electric charge , dendrite (mathematics) , analytical chemistry (journal) , chemical physics , chemistry , thermodynamics , physics , composite material , optics , geometry , chromatography , nuclear physics , quantum mechanics , psychotherapist , psychology , mathematics
Ice needles were grown from the vapour on extremely fine quartz fibres situated inside a diffusion chamber. When temperature gradients were applied to the needles charge was separated within them; the colder end became positively charged and the warmer negatively charged. the magnitude of the charge separation was determined by measuring the deflection of the needles in a weak electric field and was in approximate agreement with Mason's equations. Measurement was made of the charge acquired by an ice needle when it was momentarily touched against a dendrite inside the diffusion chamber. When the needle was warmer than the dendrite it acquired negative charge, and when it was colder it acquired a positive charge. the magnitude of the charge transfer was explicable approximately in terms of Mason's equations.