Title :
A cavity reservoir dispenser cathode for CRTs and low-cost traveling-wave tube applications
Author_Institution :
Ceradyne Electron Sources, Lexington, KY, USA
fDate :
1/1/1989 12:00:00 AM
Abstract :
The application of the cavity reservoir dispenser cathode to long-life high-current-density cathodes for cathode-ray tubes (CRTs) and other vacuum devices is discussed. Fabrication techniques are described and data showing emission current versus temperature are presented. The data were obtained from tests conducted in actual CRT guns. The cathode described is expected to meet most, if not all, over the demands for high-resolution, high-brightness CRT displays as well as the low-cost, high-performance demands of traveling-wave tubes
Keywords :
cathode-ray tubes; thermionic cathodes; travelling-wave-tubes; CRTs; actual CRT guns; cathode-ray tubes; cavity reservoir dispenser cathode; emission current versus temperature; high-brightness CRT displays; high-resolution; long-life high-current-density cathodes; low-cost traveling-wave tube; tests; thermionic cathodes; Barium; Calcium; Cathode ray tubes; Coatings; Computer displays; Current density; HDTV; Optical surface waves; Reservoirs; Temperature;
Journal_Title :
Electron Devices, IEEE Transactions on
