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Proceedings Paper

An Oil-Cooled Flash X-Ray Tube For Biomedical Radiography
Author(s): Eiichi Sato; Satoshi Kawasaki; Hiroshi Isobe; Toru Yanagisawa; Jutaro Takahashi; Yasuhisa Yasuda
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Paper Abstract

The construction and the applications of an oil-cooled flash x-ray tube to biomedical radiography are described. Generally, this tube was used for the repetitional flash x-ray generator for producing soft x-rays and consisted of the following major parts: a vacuum vessel made of stainless steel with a diameter of 80mm, a ring cathode made of molybdenum of 0.2mm thickness, a rod-shaped anode tip made of tungsten with a diameter of less than 3.0mm for obtaining the high intensity x-rays, an anode rod made of beryllium-copper alloy utilizing cooling fins, an internal x-ray output made of copper having a cooling mechanism, and an air-cooled heat exchanger. The anode tip was mounted on the anode rod and could easily be changed, and the cathode was attached to the internal output mouth of x-rays. The anode-cathode plane space was adjusted from the outside of the x-ray tube by rotating the x-ray diaphragm. The operating voltage was less than 150kV, and the maximum tube current was more than lOkA. The effective focal spot size primarily varied according to the diameter of anode tip and it ranged from 0.5 to 3.0mm in diameter. This tube was connected to two types of high-voltage pulsers: (a) a high voltage repetitional pulser achieved with a frequency control system of less than 20Hz, and (b) a Cockcroft circuit with a high-frequen-cy DC-AC inverter. Various radiographs were obtained by using this tube in conjunction with these pulsers.

Paper Details

Date Published: 1 February 1989
PDF: 8 pages
Proc. SPIE 0981, High Speed Photography, Videography, and Photonics VI, (1 February 1989); doi: 10.1117/12.948673
Show Author Affiliations
Eiichi Sato, Iwate Medical University (Japan)
Satoshi Kawasaki, Iwate Medical University (Japan)
Hiroshi Isobe, Iwate Medical University (Japan)
Toru Yanagisawa, Iwate Medical University (Japan)
Jutaro Takahashi, Iwate University (Japan)
Yasuhisa Yasuda, Iwate University (Japan)

Published in SPIE Proceedings Vol. 0981:
High Speed Photography, Videography, and Photonics VI
Gary L. Stradling, Editor(s)

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