Monochromatic flash x-ray generator utilizing disk-cathode silver tube

Eiichi Sato; Yasuomi Hayasi; Rudolf K.F. Germer; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Toshio Ichimaru; Kazuyoshi Takayama; Hideaki Ido

doi:10.1117/12.560537

3 November 2004 Monochromatic flash x-ray generator utilizing disk-cathode silver tube

Eiichi Sato, Yasuomi Hayasi, Rudolf K.F. Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Toshio Ichimaru, Kazuyoshi Takayama, Hideaki Ido

Author Affiliations +

Proceedings Volume 5537, X-Ray Sources and Optics; (2004) https://doi.org/10.1117/12.560537
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

The high-voltage condensers in a polarity-inversion two-stage Marx surge generator are charged from -50 to -70 kV by a power supply, and the electric charges in the condensers are discharged to an x-ray tube after closing gap switches in the surge generator with 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 silver Kα lines are produced using a 30 μm-thick palladium 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. At a charging voltage of -70 kV, the instantaneous tube voltage and current were 90 kV and 0.8 kA, respectively. The x-ray pulse widths were approximately 80 ns, and the instantaneous number of generator-produced Kα photons was approximately 40 M photons/cm² per pulse at 0.3 m from the source of 3.0 mm in diameter.

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Eiichi Sato, Yasuomi Hayasi, Rudolf K.F. Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Toshio Ichimaru, Kazuyoshi Takayama, and Hideaki Ido "Monochromatic flash x-ray generator utilizing disk-cathode silver tube", Proc. SPIE 5537, X-Ray Sources and Optics, (3 November 2004); https://doi.org/10.1117/12.560537

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KEYWORDS

X-rays

Silver

X-ray sources

Radiography

Photons

Palladium

Medical research

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