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Proceedings Paper

High-intensity flashlight generator and its applications
Author(s): Michiaki Sagae; Eiichi Sato; Makoto Komatsu; Yasuomi Hayasi; Tatsumi Usuki; Koetsu Sato; Hidenori Ojima; Kazuyoshi Takayama; Hideaki Ido
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Paper Abstract

The fundamental study on a high-intensity flash light generator and its applications are described. This generator is composed of a high-voltage power supply, high-voltage main condensers of 8 and 4 μF, a thyristor pulse generator as a trigger device, and a high-intensity xenon tube. The main condenser is charged up to 2.5 kV by the high-voltage power supply, and the electric charges in the condenser are discharged to the xenon tube by the thyristor pulse generator. The flashlights are then produced. The tube voltage and discharge current displayed almost the dumped oscillations. The maximum voltage was equal to the initial charging voltage, and the maximum current increased according to increases in the charging voltage and the capacity. The current was 4.1 kA with a charging voltage of 2.5 kV and a capacity of 8 μF. The pulse widths of flashlights were almost constant at a constant condenser capacity and increased with increases in the capacity. The widths were about 8 μs with a capacity of 8 μF. The shadowgraphy was performed using this generator and a trigger delay device. Finally, we performed tentative studies on parallel and point light sources.

Paper Details

Date Published: 1 August 2003
PDF: 6 pages
Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); doi: 10.1117/12.516923
Show Author Affiliations
Michiaki Sagae, Iwate Medical Univ. (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Makoto Komatsu, Iwate Medical Univ. (Japan)
Yasuomi Hayasi, Hachinohe National College of Technology (Japan)
Tatsumi Usuki, Toreck Co., Ltd. (Japan)
Koetsu Sato, Toreck Co., Ltd. (Japan)
Hidenori Ojima, Tohoku Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Hideaki Ido, Tohoku Gakuin Univ. (Japan)

Published in SPIE Proceedings Vol. 4948:
25th International Congress on High-Speed Photography and Photonics
Claude Cavailler; Graham P. Haddleton; Manfred Hugenschmidt, Editor(s)

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