Title :
Fast and Stable Operation of Carbon Nanotube Field-Emission X-Ray Tubes Achieved Using an Advanced Active-Current Control
Author :
Jun-Tae Kang ; Hyeong-Rag Lee ; Jin-Woo Jeong ; Jae-Woo Kim ; Sora Park ; Min-Sik Shin ; Ji-Hwan Yeon ; Hyojin Jeon ; Sung-Hee Kim ; Young Chul Choi ; Yoon-Ho Song
Author_Institution :
Dept. of Phys., Kyungpook Nat. Univ., Daegu, South Korea
Abstract :
The advanced active-current control (ACC) with a push-up voltage source is proposed for the fast operation of carbon nanotube (CNT) field-emission x-ray tubes while preserving the advantages of improved stability and reliability. The push-up voltage source, composed of a voltage supply and a resistor, was found to reduce markedly the response time of CNT x-ray tubes down to several tens nanoseconds. The very fast operation of CNT x-ray tube with the advanced ACC could provide an improved x-ray imaging technology, including high-speed scanning and blur-less imaging.
Keywords :
X-ray tubes; carbon nanotubes; electric current control; field emission; ACC; CNT field-emission X-ray tube; advanced active-current control; blur-less imaging; carbon nanotube field-emission X-ray tube; high-speed scanning; push-up voltage source; x-ray imaging technology; Anodes; Carbon nanotubes; Cathodes; Electron tubes; Reliability; Voltage control; X-ray imaging; Carbon nanotube; active-current control; fast and stable operation; field emission; x-ray source;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2015.2478157
