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Proceedings Paper

High-intensity vacuum-ultraviolet generator utilizing a surface-discharge diode
Author(s): Michiaki Sagae; Eiichi Sato; Teiji Oizumi; Yasuomi Hayasi; Yoshiharu Tamakawa; Toru Yanagisawa
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Paper Abstract

The fundamental studies on a high-intensity flash vacuum-ultraviolet (VUV) generator for producing water-window flash x rays are described. This generator consisted of the following essential components: a high- voltage power supply, a coaxial high-voltage pulser having a 0.2 (mu) F condenser, a Krytron pulser as a trigger device, a turbo molecular pump, and a VUV tube. The VUV tube employed a surface-discharge ferrite substrate having two copper electrodes and was evacuated by the pump with a pressure of 1.3 X 10-3 Pa. The condenser in the pulser was charged from 10 to 30 kV by the power supply, and the electric charges in the condenser were discharged to the radiation tube after closing a gap switch by the Krytron pulser. Then the flash VUV rays were generated. The maximum output voltage from the pulser was almost equivalent to the charged voltage, and both the tube voltage and current displayed damped oscillations. The maximum values of the tube voltage and current were approximately 23 kV and 13 kA, respectively. Since the effective accelerating voltage was substantially decreased by the substrate, soft x rays were easily generated. The pulse durations of the VUV rays including water window x rays were nearly equivalent to those of the damped oscillations of the voltage and current, and their values were less than 30 microsecond(s) .

Paper Details

Date Published: 30 May 1995
PDF: 10 pages
Proc. SPIE 2513, 21st International Congress on: High-Speed Photography and Photonics, (30 May 1995); doi: 10.1117/12.209669
Show Author Affiliations
Michiaki Sagae, Iwate Medical Univ. (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Teiji Oizumi, Iwate Medical Univ. (Japan)
Yasuomi Hayasi, Hachinohe National College of Technology (Japan)
Yoshiharu Tamakawa, Iwate Medical Univ. (Japan)
Toru Yanagisawa, Iwate Medical Univ. (Japan)


Published in SPIE Proceedings Vol. 2513:
21st International Congress on: High-Speed Photography and Photonics
Ung Kim; Joon-Sung Chang; Seung-Han Park, Editor(s)

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