Electron emitter with focussing arrangement
    1.
    发明授权
    Electron emitter with focussing arrangement 失效
    具有聚焦布置的电子发射器

    公开(公告)号:US4145635A

    公开(公告)日:1979-03-20

    申请号:US847857

    申请日:1977-11-02

    Inventor: Richard A. Tuck

    CPC classification number: H01J1/304

    Abstract: An electron emitter comprises field emitter zones formed by projections of field emissive material separated by regions which are not field emissive. An extractor electrode for applying an electric field to the projections and a focus electrode have openings aligned with the emitter zones and material particles aligned with the non-emissive regions. The electrodes form, when suitably energised electron focussing fields to focus electrons emitted from the zones.

    Abstract translation: 电子发射器包括由不是场发射的区域分开的场发射材料的突起形成的场发射极区。 用于向突起施加电场的提取电极和聚焦电极具有与发射区对准的开口和与非发射区对准的材料颗粒。 当适当激励电子聚焦场合以聚焦从区域发射的电子时,电极形成。

    Thermionic electron emitter
    2.
    发明授权
    Thermionic electron emitter 失效
    热电子发射体

    公开(公告)号:US4147954A

    公开(公告)日:1979-04-03

    申请号:US813529

    申请日:1977-07-07

    Inventor: Richard A. Tuck

    CPC classification number: H01J1/28

    Abstract: A thermionic electron emitter comprises a tube of wall thickness less than 0.1 mm, a body of thermionic electron emissive material compressed and sintered in the tube, and a ring, coaxial with the tube, within the body to provide constraint against cracking of the body.

    Abstract translation: 热离子电子发射器包括壁厚小于0.1mm的管,在管中压缩和烧结的热离子电子发射材料的主体以及与管同轴的环体,以提供对体的开裂的约束。

    Thermionic electron emitters and methods of making them
    3.
    发明授权
    Thermionic electron emitters and methods of making them 失效
    热电子发射体及其制造方法

    公开(公告)号:US4417173A

    公开(公告)日:1983-11-22

    申请号:US241037

    申请日:1981-03-06

    CPC classification number: H01J1/14

    Abstract: A thermionic cathode (FIG. 1) comprises a porous matrix of tungsten (4) impregnated with alkaline earth activator.A coating (5) 1 .mu.m thick is formed on the matrix (4). The coating is of .sigma. phase alloy of molybdenum and osmium.Alternative .sigma. phase alloys are disclosed, and various methods of making cathodes are disclosed.

    Abstract translation: 热离子阴极(图1)包括浸渍有碱土金属活化剂的钨(4)的多孔基体。 在基体(4)上形成1μm厚的涂层(5)。 涂层是钼和锇的σ相合金。 公开了替代的σ相合金,并且公开了制备阴极的各种方法。

    Foliar nutritional composition and method for using same

    公开(公告)号:US10947165B1

    公开(公告)日:2021-03-16

    申请号:US15212219

    申请日:2016-07-16

    Abstract: A foliar nutritional composition and method for using same for providing nutrients and/or for treating disease in plants. The foliar nutritional composition comprises a metal salt complexed with amino acids from hydrolyzed yeast extract. The metal salt is selected for high solubility using a salt of a metal selected from the group consisting of copper, nickel, zinc, iron, manganese, and combinations thereof. Preferred metal salt are nitrates, chlorides, and combinations thereof. In the method, an aqueous solution of this composition is sprayed on the plant foliage and absorbed by the plant.

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