Title :
Cathode technology overview - current status & future directions
Author :
Green, Michael C.
Author_Institution :
Ginzton Technol. Center, Varian Med. Syst., Inc, Mountain View, CA
Abstract :
This paper reviews the current status of cathodes, highlights some recent advances in real world cathode performance and assesses promising thermionic cathode technologies and directions for future research in order to meet the needs of high frequency, high power, electron beam devices. Technical problems are identified that must be addressed to further advance cathode capability. Research approaches are recommended for selected high-current-density cathode technologies.
Keywords :
current density; thermionic cathodes; cathode technology; high-current-density; thermionic cathode technologies; Cathodes; Current density; Flat panel displays; Manufacturing; Microstructure; Microwave devices; Millimeter wave radar; Millimeter wave technology; Plasma displays; TV; BWO; Cathode; CloudSat; Terahertz device; W-band radar; cathode life test; coated cathode; dispenser cathode; high-current-density; millimeter wave; osmium; reservoir cathode; scandate cathode; scandiadoped tungsten; sputter deposition;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556554
