DocumentCode
3419583
Title
Analysis of CNT emitter-based miniature x-ray tubes for stable and reliable operation
Author
Jun-Tae Kang ; Jae-Woo Kim ; Sungyoul Choi ; Jeongyong Choi ; Jin-Woo Jeong ; Seungjoon Ahn ; Yoon-Ho Song
Author_Institution
Nano Electron-Source Creative Res. Center, ETRI, Daejeon, South Korea
fYear
2013
fDate
8-12 July 2013
Firstpage
1
Lastpage
2
Abstract
We analyzed the failure mechanism in miniature x-ray tubes with a gated carbon nanotube (CNT) field emitter. The miniature x-ray tube even with a small leakage current of field emission from the CNT emitters to the gate electrode has some distortion of the electron beam trajectory from the cathode to anode passage, causing a charging at insulating parts. The charging at the insulator spacer would lead to an arcing or coupling of the anode and gate electrodes, resulting in a very unstable operation and finally a fatal failure.
Keywords
X-ray tubes; carbon nanotubes; electrodes; failure (mechanical); field emitter arrays; leakage currents; C; CNT field emitter-based miniature X-ray tubes; anode electrodes; cathode-anode passage; electron beam trajectory; failure mechanism; field emission; gate electrode; gate electrodes; insulator spacer; leakage current; Logic gates; CNT; charging; field emission; triode; x-ray tube;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Nanoelectronics Conference (IVNC), 2013 26th International
Conference_Location
Roanoke, VA
Type
conf
DOI
10.1109/IVNC.2013.6624761
Filename
6624761
Link To Document