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Proceedings Paper

Tunable narrow-photon-energy x-ray source using a silicon single crystal
Author(s): Eiichi Sato; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Takashi Inoue; Akira Ogawa; Mitsuru Izumisawa; Masanori Shozushima; Kiyomi Takahashi; Shigehiro Sato; Toshio Ichimaru; Kazuyoshi Takayama
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Paper Abstract

A preliminary experiment for producing narrow-photon-energy cone-beam x-rays using a silicon single crystal is described. In order to produce low-photon-energy x-rays, a 100-µm-focus x-ray generator in conjunction with a (111) plane silicon crystal is employed. The x-ray beams from the source are confined by an x-y diaphragm, and monochromatic cone beams are formed by the crystal and three lead plates. The x-ray generator consists of a main controller and a unit with a high-voltage circuit and a 100-µm-focus x-ray tube. In this experiment, the maximum tube voltage and current were 35 kV and 0.50 mA, respectively, and the x-ray intensity of the microfocus generator was 343 μGy/s at 1.0 m from the source with a tube voltage of 30 kV and a current of 0.50 mA. The effective photon energy is determined by Bragg's angle, and the photon-energy width is regulated by the angle delta. Using this generator in conjunction with a computed radiography system, quasi-monochromatic radiography was performed using a cone beam with an effective energy of approximately 15.5 keV.

Paper Details

Date Published: 21 September 2007
PDF: 7 pages
Proc. SPIE 6706, Hard X-Ray and Gamma-Ray Detector Physics IX, 670610 (21 September 2007); doi: 10.1117/12.733390
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Etsuro Tanaka, Tokyo Univ. of Agriculture (Japan)
Hidezo Mori, National Cardiovascular Ctr. Research Institute (Japan)
Toshiaki Kawai, Hamamatsu Photonics K.K. (Japan)
Takashi Inoue, Iwate Medical Univ. (Japan)
Akira Ogawa, Iwate Medical Univ. (Japan)
Mitsuru Izumisawa, Iwate Medical Univ. (Japan)
Masanori Shozushima, Iwate Medical Univ. (Japan)
Kiyomi Takahashi, Iwate Medical Univ. (Japan)
Shigehiro Sato, Iwate Medical Univ. (Japan)
Toshio Ichimaru, Hirosaki Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. Biomedical Engineering Research Organization (Japan)

Published in SPIE Proceedings Vol. 6706:
Hard X-Ray and Gamma-Ray Detector Physics IX
Ralph B. James; Arnold Burger; Larry A. Franks, Editor(s)

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