An Hysteresis Effect in the Transmission of Electrons through Thin Dielectric Foils

Abstract
The relative transmission of monoenergetic electrons through a dielectric foil suspended in vacuum has been observed to depend upon the previous history of the foil. A plot of this transmission against energy of incident electrons shows something resembling a type of hysteresis loop. Experiments are discussed which give evidence that this hysteresis loop is produced through the collection of negative charge within the foil.

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