Development of Field Emitter Cathodes for Electron Beam Devices.
Abstract
The applications of and the problems encountered in the use of field electron emitters as cold cathode sources for electron beam devices have been reviewed. The possibility of using an etched carbon fiber as a cold electron source in such devices has been examined. Unlike tungsten, the fibers will emit for many hours at current densities of the order of 100,000 amp/sq cm in a vacuum of 10 to the minus 8 power to 10 to the minus 7 power torr. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1973
- Accession Number
- AD0762322
Entities
People
- A. R. Osborn
- F. S. Baker
- Jim Williams