Fast and Stable Operation of Carbon Nanotube Field-Emission X-Ray Tubes Achieved Using an Advanced Active-Current Control

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 resisto...

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Bibliographic Details
Published in:IEEE electron device letters 2015-11, Vol.36 (11), p.1209-1211
Main Authors: Kang, Jun-Tae, Lee, Hyeong-Rag, Jeong, Jin-Woo, Kim, Jae-Woo, Park, Sora, Shin, Min-Sik, Yeon, Ji-Hwan, Jeon, Hyojin, Kim, Sung-Hee, Choi, Young Chul, Song, Yoon-Ho
Format: Article
Language:English
Subjects:
active-current control
Anodes
Carbon nanotube
Carbon nanotubes
Cathodes
Electric potential
Electron tubes
fast and stable operation
field emission
High speed
Imaging
Reliability
Resistors
Scanning
Voltage
Voltage control
X-ray imaging
x-ray source
X-ray tubes
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Summary: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.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2015.2478157