1 February 2007 Intense clean characteristic flash x-ray irradiation from an evaporating molybdenum diode
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Optical Engineering, 46(2), 026502 (2007). doi:10.1117/1.2541668
In a flash x-ray generator, a 150-nF condenser is charged up to 80 kV by a power supply, and flash x-rays are produced by the discharge. The x-ray tube is a demountable diode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Since the electric circuit of the high-voltage pulse generator employs a cable transmission line, the high-voltage pulse generator produces twice the potential of the condenser charging voltage. Because bremsstrahlung rays are not emitted in the opposite direction of that of electron trajectory, clean molybdenum K-series characteristic x-rays can be produced without using a filter. When the charging voltage is increased, the K-series characteristic x-ray intensities of molybdenum increase. The K lines are clean and intense, and hardly any bremsstrahlung rays are detected. The x-ray pulse widths are approximately 100 ns, and the time-integrated x-ray intensity has a value of approximately 500 µGy per pulse at 1.0 m from the x-ray source, with a charging voltage of 80 kV.
Michiaki Sagae, Eiichi Sato, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Kazuyoshi Takayama, Jun Onagawa, Hideaki Ido, "Intense clean characteristic flash x-ray irradiation from an evaporating molybdenum diode," Optical Engineering 46(2), 026502 (1 February 2007). https://doi.org/10.1117/1.2541668

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