Preliminary study for producing higher harmonic hard x-rays from weakly ionized copper plasma

Eiichi Sato; Yasuomi Hayasi; Rudolf Germer; Haruo Obara; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Takashi Inoue; Akira Ogawa; Shigehiro Sato; Kazuyoshi Takayama; Hideaki Ido

doi:10.1117/12.620216

21 September 2005 Preliminary study for producing higher harmonic hard x-rays from weakly ionized copper plasma

Eiichi Sato, Yasuomi Hayasi, Rudolf Germer, Haruo Obara, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Kazuyoshi Takayama, Hideaki Ido

Author Affiliations +

Proceedings Volume 5920, Ultrafast X-Ray Detectors, High-Speed Imaging, and Applications; 59200U (2005) https://doi.org/10.1117/12.620216
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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 copper ions and electrons, around the fine target, and intense Kα lines are left using a 10-μm-thick nickel filter. 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 16 kA. The K-series characteristic x-rays were clean and intense, and higher harmonic x-rays were observed. The x-ray pulse widths were approximately 300 ns, and the time-integrated x-ray intensity had a value of approximately 1.5 mGy per pulse at 1.0 m from the x-ray source with a charging voltage of 50 kV.

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Eiichi Sato, Yasuomi Hayasi, Rudolf Germer, Haruo Obara, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Kazuyoshi Takayama, and Hideaki Ido "Preliminary study for producing higher harmonic hard x-rays from weakly ionized copper plasma", Proc. SPIE 5920, Ultrafast X-Ray Detectors, High-Speed Imaging, and Applications, 59200U (21 September 2005); https://doi.org/10.1117/12.620216

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KEYWORDS

X-rays

Plasma

Copper

Electrodes

Hard x-rays

X-ray sources

Nickel

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