Title :
High-transmission triode CNT emitter on metal tip for super-miniature X-ray tube
Author :
Kang, Jun-Tae ; Kim, Jae-Woo ; Jeong, Jin-Woo ; Choi, Sungyoul ; Lee, Hyeong-Rag ; Song, Yoon-Ho
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
The CNT emitter on metal tip (CNT-on-Tip) cathode can provide high-brightness electron beams due to its point-like electron emission sites. The triode type emitter with a gate electrode is prerequisite to an intensity-controllable X-ray. We simulated the trajectory of the emitted electron beams in the triode CNT-on-Tip and optimized the configuration to obtain ideal triode properties. Consequently, the anode current-gate voltage characteristics were recorded with high transmission without any gate leakage current.
Keywords :
X-ray tubes; carbon nanotubes; electrodes; electron beams; electron emission; CNT-on-tip cathode; anode current-gate voltage characteristics; electron emission; gate electrode; high-brightness electron beams; high-transmission triode CNT emitter; intensity-controllable X-ray; leakage current; metal tip cathode; super-miniature X-ray tube; Anodes; Cathodes; Electron beams; Electron tubes; Leakage current; Logic gates; Metals; CNT; X-ray tube; tip emitter; triode;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2011 24th International
Conference_Location :
Wuppertal
Print_ISBN :
978-1-4577-1243-2
Electronic_ISBN :
pending
