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Proceedings Paper

Monochromatic flash x-ray generator utilizing disk-cathode silver tube
Author(s): Eiichi Sato; Yasuomi Hayasi; Rudolf K.F. Germer; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Toshio Ichimaru; Kazuyoshi Takayama; Hideaki Ido
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Paper 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.

Paper Details

Date Published: 3 November 2004
PDF: 7 pages
Proc. SPIE 5537, X-Ray Sources and Optics, (3 November 2004); doi: 10.1117/12.560537
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Yasuomi Hayasi, Iwate Medical Univ. (Japan)
Rudolf K.F. Germer, Fachhochshule fuer Technik und Wirtschaft Berlin (Germany)
Technische Univ. Berlin (Germany)
Etsuro Tanaka, Tokyo Univ. of Agriculture (Japan)
Hidezo Mori, National Cardiovascular Ctr. Research Institute (Japan)
Toshiaki Kawai, Hamamatsu Photonics Inc. (Japan)
Toshio Ichimaru, Hirosaki Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Hideaki Ido, Tohoku Gakuin Univ. (Japan)


Published in SPIE Proceedings Vol. 5537:
X-Ray Sources and Optics
Carolyn A. MacDonald; Albert T. Macrander; Tetsuya Ishikawa; Christian Morawe; James L. Wood, Editor(s)

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