摘要 |
An energy beam is irradiated onto a rotating anticathode so as to heat a portion irradiated by the energy beam under the condition that a vapor pressure at equilibrium state of the portion is set to 0.1 Torr or more, thereby generating an X-ray. The portion irradiated by the energy beam is kept at the rotating anticathode by a centrifugal force to the portion it a direction outward from a surface of the portion.
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