Share Email Print
cover

Proceedings Paper

Weakly ionized plasma flash x-ray generator and its distinctive characteristics
Author(s): Eiichi Sato; Yasuomi Hayasi; Rudolf Germer; Kazunori Murakami; Yoshitake Koorikawa; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Toshio Ichimaru; Fumiko Obata; Kiyomi Takahashi; Sigehiro Sato; Kazuyoshi Takayama; Hideaki Ido
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In the plasma flash x-ray generator, a high-voltage main condenser of approximately 200 nF is charged up to 50 kV by a power supply, and electric charges in the condenser are discharged to an x-ray tube after triggering the cathode electrode. The flash x-rays are then produced. The x-ray tube is a demountable triode that is connected to a turbo molecular pump with a pressure of approximately 1 mPa. As electron flows from the cathode electrode are roughly converged to a rod copper target of 3.0 mm in diameter by the electric field in the x-ray tube, weakly ionized linear plasma, which consists of copper ions and electrons, forms by target evaporation. At a charging voltage of 50 kV, the maximum tube voltage was almost equal to the charging voltage of the main condenser, and the peak current was about 15 kA. When the charging voltage was increased, the linear plasma formed, and the K-series characteristic x-ray intensities increased. The K-series lines were quite sharp and intense, and hardly any bremsstrahlung rays were detected. The x-ray pulse widths were approximately 700 ns, and the time-integrated x-ray intensity had a value of approximately 30 μC/kg at 1.0 m from the x-ray source with a charging voltage of 50 kV.

Paper Details

Date Published: 7 January 2004
PDF: 10 pages
Proc. SPIE 5196, Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications, (7 January 2004); doi: 10.1117/12.506486
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Yasuomi Hayasi, Iwate Medical Univ. (Japan)
Rudolf Germer, Technische Univ. Berlin (Germany)
Kazunori Murakami, Iwate Medical Univ. (Japan)
Yoshitake Koorikawa, Iwate Medical Univ. (Japan)
Etsuro Tanaka, Tokyo Univ. of Agriculture and Technology (Japan)
Hidezo Mori, National Cardiovascular Ctr. Research Institute (Japan)
Toshiaki Kawai, Hamamatsu Photonics, Inc. (Japan)
Toshio Ichimaru, Hirosaki Univ. (Japan)
Fumiko Obata, Iwate Medical Univ. (Japan)
Kiyomi Takahashi, Iwate Medical Univ. (Japan)
Sigehiro Sato, Iwate Medical Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Hideaki Ido, Tohoku Gakuin Univ. (Japan)


Published in SPIE Proceedings Vol. 5196:
Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications
George A. Kyrala; Jean-Claude J. Gauthier; Carolyn A. MacDonald; Ali M. Khounsary, Editor(s)

© SPIE. Terms of Use
Back to Top