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    ANNULAR GAP CATHODES WITH GRAPHITE CAPS
    1.
    发明公开
    ANNULAR GAP CATHODES WITH GRAPHITE CAPS 审中-公开

    公开(公告)号：US20240161993A1

    公开(公告)日：2024-05-16

    申请号：US18388122

    申请日：2023-11-08

    申请人： Kimball Physics, Inc.

    发明人： George Douglas Calvey

    IPC分类号： H01J1/15 ,  H01J1/148 ,  H01J9/04

    CPC分类号： H01J1/15 ,  H01J1/148 ,  H01J9/04

    摘要： A cathode device including an emitter element for generating electrons. The emitter element can have an outer periphery and a distal tip. The tip can have a first angled surface that angles inwardly from the outer periphery, and a second angled surface that angles inwardly and is separated and inwardly offset from the first angled surface by a shoulder. A graphite cap which can be solid, extends around the emitter element and has an internal angled surface that engages the first angled surface of the tip of the emitter element, forming a gap of a controlled size separating the internal angled surface of the graphite cap from the second angled surface of the tip of the emitter element.

    Method for fabricating emitter
    6.
    发明授权
    Method for fabricating emitter 有权
    制造发射体的方法

    公开(公告)号：US08999178B2

    公开(公告)日：2015-04-07

    申请号：US14278760

    申请日：2014-05-15

    申请人： Hitachi High-Tech Science Corporation

    发明人： Yasuhiko Sugiyama ,  Kazuo Aita ,  Fumio Aramaki ,  Tomokazu Kozakai ,  Osamu Matsuda ,  Anto Yasaka

    IPC分类号： C25F3/00 ,  H01J27/02 ,  H01J9/02 ,  H01J1/15 ,  H01J1/304 ,  H01J9/04 ,  H01J37/08 ,  H01J37/305 ,  H01J37/26

    CPC分类号： H01J27/02 ,  H01J1/15 ,  H01J1/3044 ,  H01J9/02 ,  H01J9/025 ,  H01J9/04 ,  H01J37/08 ,  H01J37/26 ,  H01J37/3056 ,  H01J2237/3174 ,  H01J2237/31749

    摘要： A method for fabricating a sharpened needle-like emitter, the method including: electrolytically polishing an end portion of an electrically conductive emitter material so as to be tapered toward a tip portion thereof; performing a first etching in which the electrolytically polished part of the emitter material is irradiated with a charged-particle beam to form a pyramid-like sharpened part having a vertex including the tip portion; performing a second etching in which the tip portion is further sharpened through field-assisted gas etching, while observing a crystal structure at the tip portion by a field ion microscope and keeping the number of atoms at a leading edge of the tip portion at a predetermined number or less; and heating the emitter material to arrange the atoms at the leading edge of the tip portion of the sharpened part in a pyramid shape.

    摘要翻译： 一种用于制造尖锐的针状发射体的方法，该方法包括：电解抛光导电发射体材料的端部，使其朝其尖端部分逐渐变细; 进行第一蚀刻，其中用电荷粒子束照射发射体材料的电解抛光部分以形成具有包括尖端部分的顶点的棱锥状的锐化部分; 进行第二蚀刻，其中尖端部分通过场辅助气体蚀刻进一步锐化，同时通过场离子显微镜观察尖端部分处的晶体结构，并将尖端部分的前缘处的原子数保持在预定的 数量以下 并且加热发射体材料以将原子布置在尖锐部分的尖端部分的金字塔形状。

    Electron emitting source and manufacturing method of electron emitting source
    7.
    发明授权
    Electron emitting source and manufacturing method of electron emitting source 有权
    电子发射源和电子发射源的制造方法

    公开(公告)号：US08456076B2

    公开(公告)日：2013-06-04

    申请号：US12745316

    申请日：2008-07-11

    申请人： Toshiyuki Morishita ,  Yoshinori Terui

    发明人： Toshiyuki Morishita ,  Yoshinori Terui

    IPC分类号： H01J1/15 ,  H01J19/08 ,  H01K1/02

    CPC分类号： H01J37/06 ,  H01J37/065 ,  H01J2237/06308 ,  H01J2237/06375

    摘要： An electron emitting source capable of preventing increase in an inter-terminal resistance and a manufacturing method of the electron emitting source. The electron emitting source comprises an electron emitting chip made of rare-earth hexaboride, and a heater constituted by a carbonaceous member for holding and heating the electron emitting chip, wherein an electrically conductive substance is provided in a gap between the electron emitting chip and the heater.

    摘要翻译： 能够防止端子间电阻增加的电子发射源和电子发射源的制造方法。 电子发射源包括由稀土六硼化物制成的电子发射芯片和由用于保持和加热电子发射芯片的碳质元件构成的加热器，其中导电物质设置在电子发射芯片和 加热器。

    Cathode
    8.
    发明授权
    Cathode 有权
    阴极

    公开(公告)号：US08294350B2

    公开(公告)日：2012-10-23

    申请号：US12557706

    申请日：2009-09-11

    申请人： Joerg Freudenberger ,  Wolfgang Kutschera ,  Gunter Roehrich ,  Karin Soeldner

    发明人： Joerg Freudenberger ,  Wolfgang Kutschera ,  Gunter Roehrich ,  Karin Soeldner

    IPC分类号： H01J1/15

    CPC分类号： H01J35/06 ,  H01J1/16 ,  H01J35/14 ,  H01J2235/06

    摘要： A cathode HAS a cathode head in which a surface emitter is arranged that emits electrons upon application of a heating voltage. The surface emitter is fashioned as a parallel surface emitter with at least two emitter surfaces spaced apart from one another, to which at least one electrically conductive cutoff electrode is fed that is galvanically separated from the parallel surface emitter. Such a cathode has a good cutoff capability.

    摘要翻译： 阴极HAS是阴极头，其中布置有施加加热电压时发射电子的表面发射体。 表面发射器被形成为具有彼此间隔开的至少两个发射极表面的平行表面发射器，至少一个导电截止电极被馈送到与该平行表面发射极电流分离的至少一个导电截止电极。 这样的阴极具有良好的截止能力。

    THERMIONIC ELECTRON EMITTER, METHOD FOR PREPARING SAME AND X-RAY SOURCE INCLUDING SAME
    9.
    发明申请
    THERMIONIC ELECTRON EMITTER, METHOD FOR PREPARING SAME AND X-RAY SOURCE INCLUDING SAME 有权
    THERMIONIC电子发射器，其制备方法和包括它们的X射线源

    公开(公告)号：US20100207508A1

    公开(公告)日：2010-08-19

    申请号：US12670133

    申请日：2008-07-18

    申请人： Zoryana Terletska ,  Stefan Hauttmann

    发明人： Zoryana Terletska ,  Stefan Hauttmann

    IPC分类号： H01J1/15 ,  H01J9/04

    CPC分类号： H01J35/06 ,  H01J1/13 ,  H01J1/14 ,  H01J9/04 ,  H01J9/042

    摘要： A thermionic electron emitter (1) is proposed comprising an emitter part (2) with a substantially flat electron emission surface (3) and a bordering surface (5) adjacent thereto. In order to better absorb main stress loads (L) induced by external forces, the emitter part is provided with an anisotropic polycrystalline material having a crystal grain structure of elongated interlocked grains the longitudinal direction (G) of which is oriented substantially perpendicular to the direction (L) of the main stress loads occurring under normal operating conditions.

    摘要翻译： 提出了一种热离子电子发射体（1），其包括具有基本上平坦的电子发射表面（3）的发射极部分（2）和与其相邻的边界表面（5）。 为了更好地吸收由外力引起的主应力负荷（L），发射器部分设置有具有细长互锁晶粒的晶粒结构的各向异性多晶材料，其纵向方向（G）基本上垂直于方向 （L）在正常工作条件下发生的主应力负荷。