Title :
Multibeam electron gun with gated carbon nanotube cathode
Author :
Bushuev, Nikolai ; Grigoriev, Yuri ; Bourtsev, Anton ; Schalaev, Pavel ; Tarasov, Evgeny
Author_Institution :
Fed. State Unitary Enterprise NPP Almaz, Saratov, Russia
Abstract :
In this paper we present the method to produce the multibeam field-emission structure with cylindrical projections made from glassy carbon and coated with thin film of carbon nanotubes. The design of the 7-beam cathode-gate unit consisting of a flat field emission cathode with metal film gate on insulating substrate and 19-beam field emission electron gun with beam compression is performed. It is shown experimentally on a model 7-beam gun that achieved the level of current density of 2,8 A/cm2, for 19-beam gun - 12 A/cm2 on cathode.
Keywords :
carbon nanotubes; cathodes; electron guns; thin film devices; 19-beam field emission electron gun; 19-beam gun; 7-beam cathode-gate unit; 7-beam gun; C; carbon nanotube thin film; cylindrical projections; flat field emission cathode; gated carbon nanotube cathode; glassy carbon; insulating substrate; metal film gate; multibeam electron gun; multibeam field-emission structure; Carbon dioxide; Carbon nanotubes; Cathodes; Electron beams; Films; Logic gates; Metals; CVD; beam compression; carbon nanotube; electron gun; field emission cathode; gate; glassy carbon;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0188-6
Electronic_ISBN :
978-1-4673-0187-9
DOI :
10.1109/IVEC.2012.6262277
