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    • 6. 发明授权
    • Emitter-cup cathode for high-emission x-ray tube
    • 用于高发射X射线管的发射杯阴极
    • US5907595A
    • 1999-05-25
    • US912268
    • 1997-08-18
    • Timothy John Sommerer
    • Timothy John Sommerer
    • H01J35/06
    • H01J35/06
    • An x-ray tube has at least one approximately planar electron emitter and an emitter-cup cathode configured to provide an electron beam of substantially greater perveance and beam compression ratio than otherwise obtainable with conventional cathode designs. The cup is optimized for use in a line-focus, planar-anode tube and has a slot in which the emitter is situated, an adjacent face region which is planar and angled so as to properly form the initial electron beam, a recess to allow the initial electron beam to be accelerated without significant shaping, and an overhanging portion which completes the electron beam forming.
    • X射线管具有至少一个近似平面的电子发射器和发射极 - 杯状阴极,配置为提供比其它常规阴极设计可获得的更大的吸收和光束压缩比的电子束。 杯子被优化用于线焦点平面阳极管,并且具有发射器所在的狭槽,相邻的面区域是平面的并且成角度的,以便适当地形成初始电子束,允许凹部允许 初始电子束被加速而没有显着的成形,以及完成电子束形成的悬垂部分。