Fundamental studies for the high-intensity long-duration flash x-ray generator for biomedical radiography

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

doi:10.1117/12.24045

1 April 1991 Fundamental studies for the high-intensity long-duration flash x-ray generator for biomedical radiography

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

Author Affiliations +

Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.24045
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom

Abstract

The fundamental studies for the repetitive high-intensity microsecond x-ray generator utilizing a cold cathode tetrode are described. This generator consisted of the following essential components: a constant high-voltage power supply, an energy storage condenser of 500nF, an main discharge condenser of lOnF, a turbo molecular pump, a repetitive trigger device, and an x-ray tube. The condenser was charged from 40 to 80kV, and the electric charges in the condenser were discharged repetitively to an x-ray tube by a trigger device. The x-ray tube was of the tetrode type which was connected to a turbo molecular pump and consisted of the following major parts: a rod-shaped long anode tip made of tungsten, a cathode rod made of graphite, a ring-shaped grid electrode, and a trigger electrode. The trigger electrode was mounted at the center of the cathode electrode and was insulated by a ceramic tube. The tube current was about 0. 4kA with a charged voltage of 60kV. The x-ray pulse height and the time-integrated intensity increased when the condenser charged voltage was increased, and the intensity was less than 2. OpC/kg at lm per pulse. The exposure times were about 2Ops, and the repetition frequency was less than 50Hz.

Citation Download Citation

Eiichi Sato, Hiroshi Isobe, Kei Takahashi, Yoshiharu Tamakawa, and Toru Yanagisawa "Fundamental studies for the high-intensity long-duration flash x-ray generator for biomedical radiography", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); https://doi.org/10.1117/12.24045

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