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Proceedings Paper

Kilohertz-range variable-duration pulsed x-ray generator
Author(s): Eiichi Sato; Michiaki Sagae; Kei Takahashi; Teiji Oizumi; Yoshiharu Tamakawa; Toru Yanagisawa; Hidenori Ojima; Kazuyoshi Takayama; Akihiro Fujiwara; Kanji Mitoya
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Paper Abstract

A 30 kHz pulsed x-ray generator utilizing a hot-cathode triode in conjunction with a new type of grid controller for varying the x-ray duration is described. This generator consisted of the following essential components: a constant high-voltage power supply, a high- voltage main condenser of 97 nF, a DC power supply for the filament (hot cathode), and a hot-cathode triode. The high-voltage main condenser was charged from 50 to 70 kV by the power supply, and the electric charges in the condenser were discharged to the x-ray tube repetitively by the grid controller. The maximum values of the grid voltage (negative value) and the tube current were about -2.2 kV and 0.6 A, respectively. The x-ray duration was controlled by the time constant of the grid controller and the electron cutoff voltage. The x-ray intensity with a pulse width of 70 microsecond(s) and a charged voltage of 70 kV had a value of 1.26 (mu) C kg-1) at 0.5 m per pulse. The maximum repetition rate was about 30 kHz, and the size of the x-ray source had a value of 3.5 X 3.5 mm.

Paper Details

Date Published: 30 May 1995
PDF: 11 pages
Proc. SPIE 2513, 21st International Congress on: High-Speed Photography and Photonics, (30 May 1995); doi: 10.1117/12.209672
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Michiaki Sagae, Iwate Medical Univ. (Japan)
Kei Takahashi, Iwate Medical Univ. (Japan)
Teiji Oizumi, Iwate Medical Univ. (Japan)
Yoshiharu Tamakawa, Iwate Medical Univ. (Japan)
Toru Yanagisawa, Iwate Medical Univ. (Japan)
Hidenori Ojima, Tohoku Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Akihiro Fujiwara, Japan Mechaelectric Inc. (Japan)
Kanji Mitoya, Japan Mechaelectric Inc. (Japan)


Published in SPIE Proceedings Vol. 2513:
21st International Congress on: High-Speed Photography and Photonics
Ung Kim; Joon-Sung Chang; Seung-Han Park, Editor(s)

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