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Proceedings Paper

Second harmonic x-ray irradiation from weakly ionized linear ferrum plasma
Author(s): Eiichi Sato; Rudolf Germer; Toshiyuki Enomoto; Etsuro Tanaka; Toshiaki Kawai; Mitsuru Izumisawa; Koetsu Sato; Akira Ogawa; Shigehiro Sato; Kazuyoshi Takayama
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Paper Abstract

In the plasma flash x-ray generator, a 200 nF condenser is charged up to 50 kV by a power supply, and flash x-rays are produced by the discharging. The x-ray tube is a demountable triode with a trigger electrode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Target evaporation leads to the formation of weakly ionized linear plasma, consisting of ferrum ions and electrons, around the fine target, and intense K-series characteristic x-rays are produced from the plasma axial direction. At a charging voltage of 50 kV, the maximum tube voltage was almost equal to the charging voltage of the main condenser, and the peak current was about 15 kA. In the spectral measurement, Kβ rays were intense, and higher harmonic x-rays were observed. The pulse widths were 0.5 μs, and the maximum x-ray intensity was approximately 300 μGy.

Paper Details

Date Published: 10 February 2009
PDF: 6 pages
Proc. SPIE 7126, 28th International Congress on High-Speed Imaging and Photonics, 71261J (10 February 2009); doi: 10.1117/12.823076
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Rudolf Germer, Technische Univ. Berlin (Germany)
Fachhochschule für Technik und Wirtschaft (Germany)
Institut für Theoretische Physik (Germany)
Toshiyuki Enomoto, Toho Univ. School of Medicine (Japan)
Etsuro Tanaka, Tokyo Univ. of Agriculture (Japan)
Toshiaki Kawai, Hamamatsu Photonics K.K. (Japan)
Mitsuru Izumisawa, Iwate Medical Univ. (Japan)
Koetsu Sato, Toreck, Inc. (Japan)
Akira Ogawa, Iwate Medical Univ. (Japan)
Shigehiro Sato, Iwate Medical Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 7126:
28th International Congress on High-Speed Imaging and Photonics
Harald Kleine; Martha Patricia Butron Guillen, Editor(s)

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