A digital miniature x-ray tube with a high-density triode carbon nanotube field emitter

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 bra...

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Veröffentlicht in:	Applied physics letters 2013-01, Vol.102 (2)
Hauptverfasser:	Jeong, Jin-Woo, Kang, Jun-Tae, Choi, Sungyoul, Kim, Jae-Woo, Ahn, Seungjoon, Song, Yoon-Ho
Format:	Artikel
Sprache:	eng
Schlagworte:	ANODES BRAZING CARBON NANOTUBES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DENSITY Digital Electric potential ELECTRON EMISSION ELECTRONS Emitters (electron) FIELD EMISSION Miniature NANOSCIENCE AND NANOTECHNOLOGY OPERATION PULSES Triodes Voltage X RADIATION X-RAY TUBES
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Zusammenfassung:	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.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4776222