x射线管与石墨场发射器在高温下发炎。

IF 1.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics Pub Date : 2013-03-01 Epub Date: 2012-12-05 DOI:10.1116/1.4769970

Yusuke Iwai, Takayoshi Koike, Youhei Hayama, Atsuo Jouzuka, Tomonori Nakamura, Yoshihiro Onizuka, Motosuke Miyoshi, Hidenori Mimura

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引用次数: 8

摘要

作者开发了一类新型的石墨基场发射体，称为高温燃烧石墨场发射体(GFEIHTs)，它包括许多边缘和突起。在真空管(10-7 Pa)中研究了GFEIHT的场发射特性，得到了超过2 mA的阳极电流。作者还利用gfeiht制造了尖端x射线管。在阳极电压为16.6 kV、阳极电流为160 μA的条件下，阳极电流没有衰减。以24小时内的标准差(σ)/平均值来定义的当前离散度为2.8%。作者成功地演示了使用GFEIHT的x射线管的x射线照相和x射线荧光光谱法。

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X-ray tube with a graphite field emitter inflamed at high temperature.

The authors developed a class of novel graphite-based field emitters, known as graphite field emitters inflamed at high temperature (GFEIHTs), which includes numerous edges and juts. The GFEIHT field emission characteristics are investigated in a vacuum tube (10^-7 Pa), and an anode current exceeding 2 mA is obtained. The authors also fabricated tipped-off x-ray tubes using GFEIHTs. No degradation in the anode current is observed under the operating conditions of 16.6 kV anode voltage and 160 μA anode current. The current dispersion, defined as the standard deviation (σ)/mean over 24 h, is 2.8%. The authors successfully demonstrated radiography and x-ray fluorescence spectrometry using an x-ray tube with GFEIHT.

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来源期刊

Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics Materials Science-Materials Chemistry

CiteScore

2.70

自引率

0.00%

发文量

146