Emission characteristics and application of graphite nanospine cathode

Jyouzuka, Atsuo; Nakamura, Tomonori; Onizuka, Yoshihiro; Mimura, Hidenori; Matsumoto, Takahiro; Kume, Hiroshi

doi:doi:10.1116/1.3301606

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Journal of Vacuum Science & Technology B / Volume 28 / Issue 2 / PAPERS FROM THE 22nd INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE / Fabrication

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J. Vac. Sci. Technol. B 28, C2C31 (2010); http://dx.doi.org/10.1116/1.3301606 (6 pages)

Emission characteristics and application of graphite nanospine cathode

Atsuo Jyouzuka¹, Tomonori Nakamura², Yoshihiro Onizuka², Hidenori Mimura³, Takahiro Matsumoto⁴, and Hiroshi Kume⁵

¹Research Laboratory, Onizuka Glass Co., Ltd., 3-6-9 Imai, Oume-shi, Tokyo 198-0023, Japan and Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8011, Japan
²Research Laboratory, Onizuka Glass Co., Ltd., 3-6-9 Imai, Oume-shi, Tokyo 198-0023, Japan
³Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8011, Japan
⁴Research and Development Center, Stanley Electric Corporation, 1-3-1 Eda-Nishi, Aoba, Yokohama 225-0014, Japan
⁵Advanced Inorganic Analysis Section Environmental Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan

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(Published online 31 March 2010)

Abstract

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The emission characteristics of graphite nanospines (GNSs) encapsulated in an x-ray tube with a system for controlling electric field crowding (SCEFC) are investigated. GNSs encapsulated in an x-ray tube can be driven at an anode current (I_A) of more than 1 mA. Further, I_A can be controlled using the SCEFC. During the operation of the x-ray tube with GNSs and the SCEFC at the anode voltage of 12.5 kV and I_A of 640 μA for 100 h, there was no degradation in I_A. The noise current superimposed on I_A was observed to be ±34.5 μA. It was reduced to ±1.62 μA by using the SCEFC. The authors also demonstrated radiography and x-ray fluorescence measurement as applications of x-ray tubes with GNSs and the SCEFC.

ACKNOWLEDGMENT

The authors would like to express thanks to Prof. Masataka Satoh of Hosei University for deposition metals on Be windows.

Article Outline

INTRODUCTION
GNS FABRICATION, CATHODE CONFIGURATION, AND X-RAY TUBE FABRICATION
RESULTS AND DISCUSSION
CONCLUSION

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KEYWORDS and PACS

Keywords

cathodes, electron field emission, fluorescence, graphite, nanostructured materials, radiography, vacuum microelectronics, X-ray emission spectra, X-ray fluorescence analysis, X-ray tubes, carbon material, field emission, x-ray tube

PACS

85.45.-w

Vacuum microelectronics
84.47.+w

Vacuum tubes

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History

Received 15 September 2009
Accepted 4 January 2010
Published online 31 March 2010

Digital Object Identifier

http://dx.doi.org/10.1116/1.3301606

PUBLICATION DATA

ISSN

1071-1023 (print)

1520-8567 (online)

Publisher

American Vacuum Society

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