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    • 6. 发明专利
    • X-ray bulb
    • X-RAY BULB
    • JPS5975549A
    • 1984-04-28
    • JP18540782
    • 1982-10-22
    • Canon Inc
    • KARIYA TAKUOKAWAI YASUO
    • H01J35/14H01J35/04H01J35/24H01L21/027H05G1/52
    • H01J35/04H01J35/24
    • PURPOSE:To obtain an elongated X-ray generating apparatus having the uniform strength by irradiating the different points in the longitudinal direction of the X-ray generating surface with the electron beam continuously or intermittently generated from an electron beam generator. CONSTITUTION:An X-ray generator 1 is filled with a coolant and the X-ray generating surface 2 is formed by the anode made of a pure metal, semiconductor or alloy. The electron beam generator 3 has a filament 4 and a control grid 5, and the grid 5 focuses or deflects the electron beam released from the filament 4. The grid 5 is divided electrically into a plurality of segments along the direction of filament and a negative voltage is applied in parallel to each divided segment. A switch group 6 controls a negative voltage to be applied to the divided segments of grid 5. The X-ray generating surface is scanned by comparatively narrow electron beam. The X-ray generating part 7 like a line can be obtained by focusing the narrow beam. Meanwhile, the generating part 7 like a belt by focusing the thick beam and the generating part 7 like a broken line or broken belt by the intermittent irradiation of beam.
    • 目的:通过从电子束发生器连续地或间歇地产生的电子束照射X射线产生表面的纵向方向上的不同点,获得具有均匀强度的细长X射线产生装置。 构成:X射线发生器1填充有冷却剂,X射线产生表面2由纯金属,半导体或合金制成的阳极形成。 电子束发生器3具有灯丝4和控制栅5,并且栅格5聚焦或偏转从灯丝4释放的电子束。栅格5沿着灯丝的方向电分为多个片段,负片 电压并行施加到每个分割段。 开关组6控制施加到栅格5的分割段的负电压。通过比较窄的电子束扫描X射线产生表面。 可以通过聚焦窄光束来获得类似于线的X射线产生部分7。 同时,通过间歇地照射光束,通过将粗光束和发生部分7像虚线或破碎的带一样聚焦而生成部分7像带。