Title :
A hollow beam cathode
Author_Institution :
Ohio State University Columbus, Ohio
Abstract :
The properties of a cathode consisting of an internally coated hollow shell with an aperture have been measured for a variety of geometries. Electrons are emitted from the edge of the aperture at current densities as high as 30 amp/sq cm. The cathode is particularly adapted to producing hollow or odd-shaped electron beams.
Keywords :
Anodes; Apertures; Barium; Cathodes; Current density; Electron tubes; Plugs;
Journal_Title :
Electron Devices, Transactions of the IRE Professional Group on
DOI :
10.1109/IREPGED.1953.6811077
