1 September 2005 Monochromatic flash x-ray generator utilizing a disk-cathode silver tube
Author Affiliations +
Optical Engineering, 44(9), 096501 (2005). doi:10.1117/1.2049248
The high-voltage condensers in a polarity-inversion two-stage Marx surge generator are charged from –50 to –70 kV by a power supply, and the electric charges in the condensers are discharged to an x-ray tube after closing gap switches in the surge generator with a trigger device. The x-ray tube is a demountable diode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Clean silver Kα lines are produced using a 30-μm-thick palladium filter, since the tube utilizes a disk cathode and a rod target, and bremsstrahlung rays are not emitted in the opposite direction to that of electron acceleration. At a charging voltage of –70 kV, the instantaneous tube voltage and current are 90 kV and 0.8 kA, respectively. The x-ray pulse widths are approximately 80 ns, and the instantaneous number of generator-produced Kα photons is approximately 4×107photons/cm2 per pulse at 0.3 m from the source 3.0 mm in diameter.
Eiichi Sato, Yasuomi Hayasi, Rudolf K. F. Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru, Kazuyoshi Takayama, Jun Onagawa, Hideaki Ido, "Monochromatic flash x-ray generator utilizing a disk-cathode silver tube," Optical Engineering 44(9), 096501 (1 September 2005). https://doi.org/10.1117/1.2049248


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