Title :
A novel gate structure for a miniature X-ray tube based on CNT emitters
Author :
Choi, Sungyoul ; Kang, Jun-Tae ; Jeong, Jin-Woo ; Kim, Jae-Woo ; Kim, Bumjong ; Kim, Dae-Jun ; Song, Yoon-Ho
Author_Institution :
Nano Electron-Source Creative Res. Center, Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
We suggest a novel gate structure, Focusing-Functional Gate (FFG), having a focusing effect on the electron beams from the carbon nanotube (CNT) emitters for the miniature X-ray tubes. The FFG induced field emission from the CNT emitters and focused electron beams into the anode target without an additional focusing electrode, resulting in a small focal spot with little charging at the insulating body of the X-ray tube. We have successfully obtained a stable emission current and images from the miniature X-ray tube with the FFG.
Keywords :
X-ray tubes; anodes; carbon nanotubes; electron beam focusing; electron field emission; insulation; CNT emitters; FFG induced field emission; anode target; carbon nanotube emitters; electron beam; emission current; focusing effect; focusing-functional gate; gate structure; insulating body; miniature X-ray tube; Anodes; Current measurement; Electron beams; Electron tubes; Focusing; Logic gates; X-ray imaging; X-ray source; carbon nanotube (CNT); field emitter;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2012 25th International
Conference_Location :
Jeju
Print_ISBN :
978-1-4673-1983-6
Electronic_ISBN :
pending
DOI :
10.1109/IVNC.2012.6316983
