Flash x-ray generator having a liquid-anode diode

Teiji Oizumi; Eiichi Sato; Arimitsu Shikoda; Michiaki Sagae; Kei Takahashi; Yoshiharu Tamakawa; Toru Yanagisawa; Hidenori Ojima; Kazuyoshi Takayama; Akihiro Fujiwara; Kanji Mitoya

doi:10.1117/12.209673

30 May 1995 Flash x-ray generator having a liquid-anode diode

Teiji Oizumi, Eiichi Sato, Arimitsu Shikoda, Michiaki Sagae, Kei Takahashi, Yoshiharu Tamakawa, Toru Yanagisawa, Hidenori Ojima, Kazuyoshi Takayama, Akihiro Fujiwara, Kanji Mitoya

Author Affiliations +

Proceedings Volume 2513, 21st International Congress on: High-Speed Photography and Photonics; (1995) https://doi.org/10.1117/12.209673
Event: High-Speed Photography and Photonics: 21st International Congress, 1994, Taejon, Korea, Republic of

Abstract

The constructions and the fundamental studies of a flash x-ray generator having a liquid-anode diode are described. This flash x-ray generator consisted of the following essential components: a high-voltage power supply, a high-voltage pulser, a thyratron pulser as a trigger device, an oil diffusion pump, and a flash x-ray tube. The main condenser was negatively charged from 50 to 70 kV by the power supply, and the electric charges in the condenser were discharged to the x-ray tube after closing a gap switch by using the thyratron pulser. The flash x- ray tube was of a diode type having a mercury anode and a ferrite cathode. The pressure of the tube was primarily determined by the steam pressure of mercury as a function of temperature. The maximum output voltage from the pulser was about -1 times the charged voltage. The maximum tube voltage and current were approximately 60 kV and 3 kA, respectively, with a charged voltage of -60 kV and a space between the anode and cathode electrodes (AC space) of 2.0 mm. The pulse widths of flash x rays were about 50 ns, and the x-ray intensity measured by a thermoluminescence dosimeter had a value of about 2.5 (mu) C/kg at 0.3 m per pulse with a charged voltage of -70 kV and an AC space of 1.0 mm.

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Teiji Oizumi, Eiichi Sato, Arimitsu Shikoda, Michiaki Sagae, Kei Takahashi, Yoshiharu Tamakawa, Toru Yanagisawa, Hidenori Ojima, Kazuyoshi Takayama, Akihiro Fujiwara, and Kanji Mitoya "Flash x-ray generator having a liquid-anode diode", Proc. SPIE 2513, 21st International Congress on: High-Speed Photography and Photonics, (30 May 1995); https://doi.org/10.1117/12.209673

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KEYWORDS

X-rays

Radiography

Diodes

Virtual colonoscopy

Mercury

Electrodes

X-ray sources

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