| 摘要 |
An X-ray tube having an evacuated metal envelope in which an anode is mounted for rotation about an axis perpendicular to an electron beam produced by a cathode. The anode is cooled and is frustoconical in shape, the inclined surface of which intercepts the electron beam. In a preferred embodiment, the anode is in the form of a disc consisting of molybdenum or graphite surrounded by a tire of tungsten or an alloy of tungsten and is at ground potential while the cathode is at a potential which causes X-rays to be generated and is secured to the envelope by an insulator having a recess for receiving a plug connected to a source of potential sufficient to generate X-rays.
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