Monochromatic flash x-ray generator utilizing copper-target diode

Eiichi Sato; Michiaki Sagae; Makoto Komatsu; Rudolf Germer; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Toshio Ichimaru; Shigehiro Sato; Hidenori Ojima; Kazuyoshi Takayama; Hideaki Ido

doi:10.1117/12.567585

17 March 2005 Monochromatic flash x-ray generator utilizing copper-target diode

Eiichi Sato, Michiaki Sagae, Makoto Komatsu, Rudolf Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Toshio Ichimaru, 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/10.1117/12.567585
Event: 26th International Congress on High-Speed Photography and Photonics, 2004, Alexandria, Virginia, United States

Abstract

High-voltage condensers in a polarity-inversion two-stage Marx surge generator are charged from -50 to -70 kV using a power supply, and the electric charges in the condensers are discharged to an x-ray tube after closing the gap switches in the surge generator using a trigger device. The x-ray tube is a demountable diode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Clean copper Kα lines are produced using a 10-μm-thick nickel filter, since the tube utilizes a disk cathode and a rod target, and bremsstrahlung rays are not emitted in the opposite direction to that of electron acceleration. The peak tube voltage increased with increasing charging voltage. At a charging voltage of -70 kV, the peak tube voltage and current were 140 kV and 0.8 kA, respectively. The pulse widths were approximately 30 ns, and the maximum dimension of the x-ray source was 3.0 mm in diameter. The number of generator-produced Kα photons was approximately 2.5x10⁶ photons/cm² at 0.5 m per pulse.

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Eiichi Sato, Michiaki Sagae, Makoto Komatsu, Rudolf Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Toshio Ichimaru, Shigehiro Sato, Hidenori Ojima, Kazuyoshi Takayama, and Hideaki Ido "Monochromatic flash x-ray generator utilizing copper-target diode", Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); https://doi.org/10.1117/12.567585

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KEYWORDS

X-rays

Copper

Diodes

Radiography

X-ray sources

Angiography

Photons

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