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Journal Article
A Digital Miniature X-Ray Tube with a High-Density Triode Carbon Nanotube Field Emitter
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- Issue Date
- 2013-01
- Citation
- Applied Physics Letters, v.102, no.2, pp.1-4
- ISSN
- 0003-6951
- Publisher
- American Institute of Physics (AIP)
- Language
- English
- Type
- Journal Article
- Abstract
- We have fabricated a digital miniature x-ray tube (6 mm in diameter and 32 mm in length) with a high-density triode carbon nanotube (CNT) field emitter for special x-ray applications. The triode CNT emitter was densely formed within a diameter of below 4 mm with the focusing-functional gate. The brazing process enables us to obtain and maintain a desired vacuum level for the reliable electron emission from the CNT emitters after the vacuum packaging. The miniature x-ray tube exhibited a stable and reliable operation over 250 h in a pulse mode at an anode voltage of above 25 kV. © 2013 American Institute of Physics.
- KSP Keywords
- 2 mm, Anode voltage, Brazing process, Carbon nano-tube(CNT), Carbon nanotube field emitter, Electron emission, Functional gate, High-density, Miniature X-ray tube, Vacuum level, Vacuum packaging