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    Design and manufacturing processes of long-life hollow cathode assemblies
    71.
    发明申请
    Design and manufacturing processes of long-life hollow cathode assemblies 失效
    长寿命空心阴极组件的设计和制造工艺

    公开(公告)号：US20010009353A1

    公开(公告)日：2001-07-26

    申请号：US09754388

    申请日：2000-12-28

    Inventor： Michael J. Patterson ,  Timothy R. Verhey ,  George C. Soulas

    IPC: H01J025/50

    CPC classification number: H01J37/32596 ,  H01J1/025

    Abstract: The design and manufacturing processes for Hollow Cathode Assemblies (HCA's) that operate over a broad range of emission currents up to 30 Amperes, at low potentials, with lifetimes in excess of 17,500 hours. The processes include contamination control procedures which cover hollow cathode component cleaning procedures, gas feed system designs and specifications, and hollow cathode activation and operating procedures to thereby produce cathode assemblies that have demonstrated stable and repeatable operating conditions, for both the discharge current and voltage. The HCA of this invention provides lifetimes of greater than 10,000 hours, and expected lifetimes of greater than 17,500 hours, whereas the present state-of-the-art is less than 500 hours at emission currents in excess of 1 Ampere. Stable operation is provided over a large range of operating emission currents, up to a 6:1 ratio, and this HCA can emit electron currents of up to 30 Amperes in magnitude to an external anode that simulates the current drawn to a space plasma, at voltages of less than 20 Volts.

    Abstract translation: 空心阴极组件（HCA）的设计和制造过程，其工作范围广泛，发射电流高达30安培，电位低，寿命超过17,500小时。 这些方法包括污染控制程序，其涵盖空心阴极部件清洁程序，气体供给系统设计和规范，以及中空阴极活化和操作程序，从而产生对于放电电流和电压都已经证明稳定和可重复的操作条件的阴极组件。 本发明的HCA提供的寿命大于10,000小时，预期寿命大于17,500小时，而现有技术在超过1安培的发射电流下小于500小时。 在大范围的工作发射电流下提供稳定的操作，高达6：1的比例，并且该HCA可以向外部阳极发射高达30安培的电子电流，该外部阳极模拟吸入空间等离子体的电流， 电压小于20伏。

    Hollow cathode
    74.
    发明授权
    Hollow cathode 失效
    空心阴极

    公开(公告)号：US4633129A

    公开(公告)日：1986-12-30

    申请号：US729028

    申请日：1985-04-30

    Applicant: Jerome J. Cuomo ,  Harold R. Kaufman ,  Stephen M. Rossnagel

    Inventor： Jerome J. Cuomo ,  Harold R. Kaufman ,  Stephen M. Rossnagel

    IPC: H01J37/077 ,  H01J1/02 ,  H01J43/08

    CPC classification number: H01J1/025

    Abstract: A long life high current density hollow cathode electron beam source for use in various E-beam apparatus which uses an ionizable gas within the hollow cathode. Bombardment of an electron emissive surface within the hollow cathode by energetic gas ions causes electrons to be emitted by secondary emission rather than thermionic emission effects. Once initialized by an external ionization voltage the device is essentially self sustaining and operates near room temperature, rather than at thermionic emission temperatures, and with reduced voltages.

    Abstract translation: 一种长寿命的高电流密度中空阴极电子束源，用于各种电子束装置，其使用空心阴极内的可电离气体。 通过能量气体离子轰击空心阴极内的电子发射表面，可以通过二次发射而不是热离子发射效应来发射电子。 一旦通过外部电离电压初始化，器件基本上是自我维持的，并且在室温附近操作，而不是在热离子发射温度下并且具有降低的电压。

    Shielded hollow cathode electrode for fluorescent lamp
    75.
    发明授权
    Shielded hollow cathode electrode for fluorescent lamp 失效
    荧光灯屏蔽空心阴极电极

    公开(公告)号：US4461970A

    公开(公告)日：1984-07-24

    申请号：US324926

    申请日：1981-11-25

    Applicant: John M. Anderson

    Inventor： John M. Anderson

    IPC: H01J1/02 ,  H01J61/09 ,  H01J1/20 ,  H01J1/24

    CPC classification number: H01J61/09 ,  H01J1/025

    Abstract: A hollow cathode electrode, particularly useful in fluorescent lamps, comprises an outer metal sleeve, an inner metal sleeve disposed within the outer sleeve and an emissive mix disposed on the inner sleeve. In one embodiment, the inner sleeve is a folded cylinder having a square cross section disposed within a circular cylinder. The object of the present invention is to prevent heat loss from the inner sleeve and to minimize sputtering. The electrode of the present invention may also include a third exterior sleeve surrounding but not contacting the interior sleeve or sleeves.

    Abstract translation: 特别用于荧光灯的中空阴极电极包括外金属套筒，设置在外套筒内的内金属套管和设置在内套筒上的发射混合物。 在一个实施例中，内套筒是具有设置在圆柱体内的正方形横截面的折叠圆柱体。 本发明的目的是防止来自内套筒的热损失并使溅射最小化。 本发明的电极还可以包括围绕但不接触内部套筒或套筒的第三外部套筒。

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