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Proceedings Paper

Intense quasi-monochromatic flash x-ray generator utilizing molybdenum-target diode
Author(s): Michiaki Sagae; Eiichi Sato; Haruo Obara; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Shigehiro Sato; Hidenori Ojima; Kazuyoshi Takayama; Hideaki Ido
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Paper Abstract

In the flash x-ray generator, a 150 nF condenser is charged up to 80 kV by a power supply, and flash x rays are produced by the discharging. The x-ray tube is a demountable diode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Since the electric circuit of the high-voltage pulse generator employs a cable transmission line, the high-voltage pulse generator produces twice the potential of the condenser charging voltage. At a charging voltage of 80 kV, the estimated maximum tube voltage and current were approximately 160 kV and 40 kA, respectively. When the charging voltage was increased, the K-series characteristic x-ray intensities of molybdenum increased. The K lines were clean and intense, and hardly any bremsstrahlung rays were detected at all. The x-ray pulse widths were approximately 100 ns, and the time-integrated x-ray intensity had a value of approximately 15 μC/kg at 1.0 m from the x-ray source with a charging voltage of 80 kV.

Paper Details

Date Published: 17 March 2005
PDF: 7 pages
Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); doi: 10.1117/12.581246
Show Author Affiliations
Michiaki Sagae, Iwate Medical Univ. (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Haruo Obara, Tohoku Univ. (Japan)
Etsuro Tanaka, Tokyo Univ. of Agriculture and Technology (Japan)
Hidezo Mori, National Cardiovascular Ctr. Research Institute (Japan)
Toshiaki Kawai, Hamamatsu Photonics KK (Japan)
Shigehiro Sato, Iwate Medical Univ. (Japan)
Hidenori Ojima, Tohoku Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Hideaki Ido, Tohoku Gakuin Univ. (Japan)


Published in SPIE Proceedings Vol. 5580:
26th International Congress on High-Speed Photography and Photonics
Dennis L. Paisley; Stuart Kleinfelder; Donald R. Snyder; Brian J. Thompson, Editor(s)

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