11 September 2006 Super-characteristic x-ray generator utilizing a pipe and rod target
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This generator consists of the following components: a constant high-voltage power supply, a filament power supply, a turbomolecular pump, and an x-ray tube. The x-ray tube is a demountable diode which is connected to the turbomolecular pump and consists of the following major devices: a tungsten hairpin cathode (filament), a focusing (Wehnelt) electrode, a polyethylene terephthalate x-ray window 0.25 mm in thickness, a stainless-steel tube body, a pipe target, and a rod target. The pipe and rod targets are useful for forming linear and cone beams, respectively. In the x-ray tube, the positive high voltage is applied to the anode (target) electrode, and the cathode is connected to the tube body (ground potential). In this experiment, the tube voltage applied was from12 to 20 kV, and the tube current was regulated to within 0.10 mA by the filament temperature. The exposure time is controlled in order to obtain optimum x-ray intensity. The electron beams from the cathode are converged to the target by the focusing electrode, and clean K-series characteristic x-rays are produced through the focusing electrode without using a filter. The x-ray intensities of the pipe and rod targets were 1.29 and 4.28 μGy/s at 1.0 m from the x-ray source with a tube voltage of 15 kV and a tube current of 0.10 mA, and quasi-monochromatic radiography was performed using a computed radiography system.
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Eiichi Sato, Eiichi Sato, Etsuro Tanaka, Etsuro Tanaka, Hidezo Mori, Hidezo Mori, Toshiaki Kawai, Toshiaki Kawai, Takashi Inoue, Takashi Inoue, Akira Ogawa, Akira Ogawa, Mitsuru Izumisawa, Mitsuru Izumisawa, Kiyomi Takahashi, Kiyomi Takahashi, Shigehiro Sato, Shigehiro Sato, Toshio Ichimaru, Toshio Ichimaru, Kazuyoshi Takayama, Kazuyoshi Takayama, } "Super-characteristic x-ray generator utilizing a pipe and rod target", Proc. SPIE 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII, 63190Q (11 September 2006); doi: 10.1117/12.679243; https://doi.org/10.1117/12.679243

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