1 April 1991 Repetitive flash x-ray generator utilizing an enclosed-type diode with a ring-shaped graphite cathode
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Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.24041
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom
Abstract
The fundamental studies of the repetitive type of flash x-ray generator utilizing an enclosed-type diode with a ring-shaped graphite cathode for soft radiography are described. This generator consisted of the following essential components: a constant high-voltage power supply, an energy storage condenser of lOOnF, a highvoltage pulser, a repetitive impulse switching system, and a flash x-ray tube. The pulser employed a modified two-stage Marx circuit with a capacity during main discharge of 425pF. The x-ray tube was of the enclosed-diode type and consisted of the following major devices: a rod-shaped anode tip made of tungsten, a ring cathode made of graphite, an x-ray window made of beryllium, a spattering shield made of stainless steel, and a tube body made of glass. Two condensers in the pulser were charged from 50 to 70kV, and the output voltage was about 1. 6 times the charged voltage. Both the peak tube voltage and the peak tube current increased according to increases in the charged voltage, and the maximum values of the voltage and the current were about 90kV and 0. 5kA, respectively. The pulse width was about lOOns, and the x-ray intensity was less than 2. OpC/kg at 0. 5m per pulse. The repetition frequency was less than 50Hz, and the maximum size of the effective focal spot was nearly equivalent to the anode diameter of 3. 0mm.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroshi Isobe, Hiroshi Isobe, Eiichi Sato, Eiichi Sato, Shingo Kimura, Shingo Kimura, Yoshiharu Tamakawa, Yoshiharu Tamakawa, Toru Yanagisawa, Toru Yanagisawa, Keiji Honda, Keiji Honda, Yoshiharu Yokota, Yoshiharu Yokota, "Repetitive flash x-ray generator utilizing an enclosed-type diode with a ring-shaped graphite cathode", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); doi: 10.1117/12.24041; https://doi.org/10.1117/12.24041
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