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Proceedings Paper

Tentative study on x-ray enhancement by fluorescent emission of radiation by plasma x-ray source
Author(s): Eiichi Sato; Michiaki Sagae; Toshio Ichimaru; Yasuomi Hayasi; Hidenori Ojima; Kazuyoshi Takayama; Hideaki Ido; Kimio Sakamaki; Yoshiharu Tamakawa
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Paper Abstract

Tentative study on characteristic x-ray enhancement by fluorescent emission of radiation by plasma x-ray source is described. The enhancement was performed by the plasma flash x-ray generator having a cold-cathode triode. And the generator employs a high-voltage power supply, a low-impedance coaxial transmission line with a gap switch, a high-voltage condenser with a capacity of 200 nF, a turbo-molecular pump, a thyristor pulser as a trigger device, and a flash x-ray tube. The high-voltage main condenser is charged up to 60 kV by the power supply, and the electric charges in the condenser are discharged to the tube after triggering the cathode electrode. The flash x-rays are then produced. The x-ray tube is of a demountable triode that is connected to the turbo molecular pump with a pressure of approximately 1 mPa. As the electron flows from the cathode electrode are roughly converged to the target by the electric field in the tube, the plasma x-ray source, which consists of metal ions and electrons, forms by the target evaporating. Both the tube voltage and current displayed damped oscillations, and their peak values increased according to increases in the charging voltage. In the present work, the peak tube voltage was almost equivalent to the initial charging voltage of the main condenser, and the peak current was less than 30 kA. The characteristic x-ray intensity substantially increased according to the growth in the plasma x-ray source. When the linear plasma x-ray source formed, the bremsstrahlung x-rays were absorbed without using a monochromatic filter, and high- intensity characteristic x-rays were produced.

Paper Details

Date Published: 15 September 1999
PDF: 10 pages
Proc. SPIE 3771, Radiation Sources and Radiation Interactions, (15 September 1999); doi: 10.1117/12.363707
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Michiaki Sagae, Iwate Medical Univ. (Japan)
Toshio Ichimaru, Iwate Medical Univ. (Japan)
Yasuomi Hayasi, Hachinohe National College of Technology (Japan)
Hidenori Ojima, Tohoku Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Hideaki Ido, Tohoku Gakuin Univ. (Japan)
Kimio Sakamaki, Iwate Medical Univ. (Japan)
Yoshiharu Tamakawa, Iwate Medical Univ. (Japan)

Published in SPIE Proceedings Vol. 3771:
Radiation Sources and Radiation Interactions
Edward J. Morton, Editor(s)

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