PURPOSE: To reduce fluctuation of X-ray strength by applying a means for stabilizing temperature of an insulator to a plasma focus device in which plasma is generated by creeping discharge of the insulator and making amount of gas adsorbed constant.
CONSTITUTION: A plasma focus device is constructed by disposing a cylindrical anode 1 and a cathode 2 on a coaxial and insulating by an insulator 3 of glass etc, and accommodating them in a vessel 4 which is sealed by gas of neon and argon, and providing a fluid path 7 in the vicinity of the insulator 3 to circulate pure water and air and controlling the temperature of the insulator by a sensor such as a thermister. And high voltage pulse is provided between electrodes 1, 2 to generate plasma and to inject soft X-rays. Then, the temperature of the insulator 3 is stabilized to make the amount of gas adsorbed on the surface of the insulator 3 constant, and fluctuation of X-ray strength is largely reduced to improve reproduceability.
| JP4338352 | X-ray tube and X-ray equipment using it |
| JP3639354 | X-RAY TUBE WITH CATALYST |
| WO/2011/113814 | MULTIFOCUS TUBE |
WATANABE YOSHIO
MURAYAMA SEIICHI
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