Title :
Aging process of carbon nanotube-based field emission X-ray tubes for their stable and reliable operation
Author :
Hyojin Jeon ; Min-Sik Shin ; Jin-Woo Jeong ; Jae-Woo Kim ; Sora Park ; Jun-Tae Kang ; Ji-Hwan Yeon ; Young Chul Choi ; Yoon-Ho Song
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
We have optimized the aging process of fully vacuum-sealed carbon nanotube (CNT) X-ray tubes in terms of an anode voltage, a cathode current and pulse on-time. Degradation and electrical arcing have been monitored and severely suppressed during the aging process. The completely aged CNT X-ray tube with an outer diameter of 15 mm and a length of 60 mm shows a cathode current of 3 mA at an anode voltage of 65 kV, applicable to X-ray imaging like dental examination.
Keywords :
X-ray tubes; carbon nanotubes; field emitter arrays; X-ray imaging; aging process; anode voltage; cathode current; current 3 mA; electrical arcing; fully vacuum-sealed CNT X-ray tubes; fully vacuum-sealed carbon nanotube X-ray tubes; pulse on-time; size 15 mm; size 60 mm; voltage 65 kV; Aging; Carbon nanotubes; Cathodes; Electron tubes; Integrated circuits; Reliability; X-ray imaging; X-ray tube; aging process; carbon nanotube; field emission;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2015 28th International
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4673-9356-0
DOI :
10.1109/IVNC.2015.7225577
