Accession Number : ADD010166

Title :   Integral-Shadow-Grid Controlled-Porosity Dispenser Cathode.

Descriptive Note : Patent,


Personal Author(s) : Thomas,Richard E ; Haas,George A ; Greene,Richard F

Report Date : 01 Feb 1983

Pagination or Media Count : 6

Abstract : In a controlled-porosity dispenser cathode of the type which has a foil with a plurality of holes covering the emitting material so that emitting material is dispensed through the holes to the electron-emitting surface of the foil and electrons are actually emitted through the holes and a small area surrounding each hole, a non-emitting shadow grid is laid down on the surface of the foil in such a configuration that it does not obstruct any of the emitting holes, has the same shape as the control grid, and is substantially in precise registration with the control grid. (Author)

Descriptors :   *Patents, *Cathodes(Electron Tubes), *Tube grids, *Foils(Materials), *Porous materials, Holes(Openings), Electron beams, Emission, Control systems, Emitters, Grids, Materials, Electrons, Shadows, Emittance, Control

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE