Disk-cathode flash x-ray tube driven by a repetitive type of Blumlein pulser

Eiichi Sato; Shingo Kimura; Hiroshi Isobe; Kei Takahashi; Yoshiharu Tamakawa; Toru Yanagisawa

doi:10.1117/12.24042

1 April 1991 Disk-cathode flash x-ray tube driven by a repetitive type of Blumlein pulser

Eiichi Sato, Shingo Kimura, Hiroshi Isobe, Kei Takahashi, Yoshiharu Tamakawa, Toru Yanagisawa

Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.24042
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom

Abstract

A repetitive flash x-ray generator utilizing a disk-cathode radiation tube is described. This generator consisted of the following essential components: a high voltage power supply, an energy storage condenser, a repetitive type of modified Blumlein pulser, a turbo molecular pump, and a flash x-ray tube. This high-voltage pulser consisted of the following major devices: two ceramic condensers with capacities of 85OpF, a gas gap switch driven by electric field distortion, and a coil. The two condensers were charged from -50 to -70kV, and the total capacity during main discharge was 425pF. The peak voltages of the pulser output were about -1. 4 times the condenser charged voltage. The flash x-ray tube consisted of the following major devices: a rod-shaped anode tip made of tungsten, a disk cathode made of graphite, a spattering shield, and a tube body made of acrylate resin. The anode-cathode (A-C) space was regulated from the outside of the x-ray tube by rotating the anode rod. The maximum values of the tube voltage and the current were about 80kV and 1. 2kA, respectively. The maximum pulse width was about lOOns, and the x-ray intensity was less than lpC/kg at 0. 3m per pulse. The repetition frequency was less than 50Hz, and the maximum focal spot size was equivalent to the anode diameter of 3. 0mm.

Citation Download Citation

Eiichi Sato, Shingo Kimura, Hiroshi Isobe, Kei Takahashi, Yoshiharu Tamakawa, and Toru Yanagisawa "Disk-cathode flash x-ray tube driven by a repetitive type of Blumlein pulser", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); https://doi.org/10.1117/12.24042

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