Low-power-loss and high voltage X-ray tube with graphite nanospines cold cathode

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• 作者：Atsuo Jyouzuka^a ; ^b ; ^{jyouzuka@onizca.co.jp} ; Takayoshi Koike^a ; Tomonori Nakamura^a ; Yoshihiro Onizuka^a ; Hidenori Mimura^b
• 关键词：Graphite nanospines ; Cold cathode ; X-ray tube ; Radiography
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2011
• 出版时间：11 December, 2011
• 年：2011
• 卷：659
• 期：1
• 页码：587-590
• 全文大小：1K

文摘

We report a low-power-loss and high voltage X-ray tubes with a graphite nanospines (GNS) cold cathode. The cathode is encapsulated in a glass tube having a Beryllium window with a Tantalum film to generate X-rays. The internal tube pressure was below 10^? Pa and a tube current exceeding 1 mA at a tube voltage of 22.9 kV was observed in the fabricated X-ray tube. The tube current dispersion, defined as standard deviation/mean (¦Ò/mean), was relatively small at 2.4 % . An X-ray radiation dose rate exceeding 5 Sv/h was obtained from the X-ray tube and the radiation dose rate dispersion was also small (¦Ò/mean=0.3 % ). As an application of the X-ray tube, we demonstrated radiography for the rapid inspection of organic products.