Intense quasi-monochromatic flash x-ray generator utilizing molybdenum-target diode

Michiaki Sagae; Eiichi Sato; Haruo Obara; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Shigehiro Sato; Hidenori Ojima; Kazuyoshi Takayama; Hideaki Ido

doi:10.1117/12.581246

17 March 2005 Intense quasi-monochromatic flash x-ray generator utilizing molybdenum-target diode

Michiaki Sagae, Eiichi Sato, Haruo Obara, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Shigehiro Sato, Hidenori Ojima, Kazuyoshi Takayama, Hideaki Ido

Author Affiliations +

Proceedings Volume 5580, 26th International Congress on High-Speed Photography and Photonics; (2005) https://doi.org/10.1117/12.581246
Event: 26th International Congress on High-Speed Photography and Photonics, 2004, Alexandria, Virginia, United States

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.

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Michiaki Sagae, Eiichi Sato, Haruo Obara, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Shigehiro Sato, Hidenori Ojima, Kazuyoshi Takayama, and Hideaki Ido "Intense quasi-monochromatic flash x-ray generator utilizing molybdenum-target diode", Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); https://doi.org/10.1117/12.581246

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KEYWORDS

X-rays

X-ray sources

Molybdenum

Radiography

Angiography

Diodes

Medical research

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