, Volume 161, Issue 4, pp 454-474

Elektroneninterferenzen an mehreren künstlich hergestellten Feinspalten

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Abstract

A glass plate covered with an evaporated silver film of about 200 å thickness is irradiated by a line-shaped electron-probe in a vacuum of 10−4 Torr. A hydrocarbon polymerisation film of very low electrical conductivity is formed at places subjected to high electron current density. An electrolytically deposited copper film leaves these places free from copper. When the copper film is stripped a grating with slits free of any material is obtained. 50 Μ long and 0·3 Μ wide slits with a grating constant of 1 Μ are obtained. The maximum number of slits is five. The electron diffraction pattern obtained using these slits in an arrangement analogous to Young's light optical interference experiment in the Fraunhofer plane and Fresnel region shows an effect corresponding to the well-known interference phenomena in light optics.

Es ist mir eine Freude, Herrn Professor Dr. G.Möllenstedt für die Anregung zu dieser Arbeit und ihre stete Förderung an dieser Stelle danken zu können. Ferner danke ich Herrn Dozent Dr. F.Lenz für wertvolle Hinweise bei der Behandlung des theoretischen Abschnitts.
Der Deutschen Forschungsgemeinschaft und der Arbeitsgemeinschaft für Elektronen-Optik danke ich für apparative und personelle Unterstützung.