公开(公告)号：US20140139100A1

公开(公告)日：2014-05-22

申请号：US14047827

申请日：2013-10-07

Applicant: NUFLARE TECHNOLOGY, INC.

Inventor： Ryoei KOBAYASHI

IPC: H01J1/148 ,  H01J9/04

CPC classification number: H01J1/148 ,  H01J9/04 ,  H01J37/065 ,  H01J2237/06308 ,  H01J2237/26 ,  H01J2237/31754

Abstract: A thermionic cathode of an embodiment includes a carbon coating applied to an outer surface of the side, the carbon coating comprising a contiguous extended portion surrounding the upper section and spaced apart from said upper section by a gap having 1 μm or more and 10 μm or less in width and having a difference of 1 μm or less in the width between a maximum value and a minimum value in a periphery of the electron emitting surface.

Abstract translation: 实施方案的热离子阴极包括施加到侧面的外表面的碳涂层，碳涂层包括围绕上部的邻接的延伸部分并且与上部分隔开具有1μm或更大和10μm的间隙，或 宽度较小，并且在电子发射表面的周围的最大值和最小值之间的宽度上具有1μm或更小的差。

公开(公告)号：US4482838A

公开(公告)日：1984-11-13

申请号：US327467

申请日：1981-12-04

Applicant: Masaji Ishii ,  Hirotoshi Hagiwara ,  Hideo Hiraoka

Inventor： Masaji Ishii ,  Hirotoshi Hagiwara ,  Hideo Hiraoka

IPC: H01J37/06 ,  H01J1/14 ,  H01J1/148 ,  H01J1/16 ,  H01J19/10

CPC classification number: H01J1/16 ,  H01J1/148

Abstract: A thermionic emission cathode of a single crystal made of the calcium hexaboride type crystaline structure comprises a top surrounded by natural face inherent to the axial direction of the single crystal.

Abstract translation: 由六硼酸钙型晶体结构构成的单晶的热离子发射阴极包括由单晶轴向固有的天然面包围的顶部。

公开(公告)号：US3823337A

公开(公告)日：1974-07-09

申请号：US36387773

申请日：1973-05-25

Applicant: PHILIPS CORP

Inventor： MITRA N ,  VAN STRATUM A ,  ZALM P

IPC: H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J19/06

CPC classification number: H01J1/15 ,  H01J1/148

Abstract: A cathode suitable for poor vacuum conditions and repeated exposures to air consists of a molybdenum support, compact or compressed powder, welded on a tungsten wire and having thereon a compressed mixture of rhenium with lanthanum hexaboride. Instead of rhenium, a tungsten boride such as W2B or W2B5 may be chosen.

公开(公告)号：US20240331965A1

公开(公告)日：2024-10-03

申请号：US18623300

申请日：2024-04-01

Applicant: West Virginia University Board of Governors on Behalf of West Virginia University

Inventor： Shanshan Hu ,  Xingbo Liu

IPC: H01J1/148 ,  G01K7/16

CPC classification number: H01J1/148 ,  G01K7/16

Abstract: Various examples are provided related to electrodes for high temperature electrochemical corrosion sensing. In one example, a high temperature sensor electrode includes a quartz tube; a copper chloride and sodium chloride mixture sealed in the quartz tube; and an electrode wire in the mixture, the electrode wire including an electrode connection extending through a seal of the quartz tube. In another example, a method for electrochemical testing includes immersing electrodes of a high temperature electrochemical sensor in a corrosive medium, the electrodes comprising a high temperature sensor electrode; and obtaining one or more electrochemical measurement via the electrodes immersed in the corrosive medium. The electrodes can also include a working electrode and/or a counter electrode.

公开(公告)号：US11094493B2

公开(公告)日：2021-08-17

申请号：US16529409

申请日：2019-08-01

Applicant: Lockheed Martin Corporation

Inventor： Frans Hendrik Ebersohn ,  Randall James Sovereign ,  Jonathon Robert Heinrich ,  Regina Mariko Sullivan

IPC: H01J1/148 ,  H01J9/04

Abstract: In one embodiment, a system includes a cathode and a thermionic emitter installed at least partially within the cathode tube of the cathode. The thermionic emitter is in a shape of a hollow cylinder. The hollow cylinder includes an outer surface and an unsmooth inner surface. The outer surface is configured to contact an inner surface of the cathode tube. The unsmooth inner surface includes a plurality of structures that provide an increase in surface area over a smooth surface.

公开(公告)号：US20210035765A1

公开(公告)日：2021-02-04

申请号：US16529409

申请日：2019-08-01

Applicant: Lockheed Martin Corporation

Inventor： Frans Hendrik Ebersohn ,  Randall James Sovereign ,  Jonathon Robert Heinrich ,  Regina Mariko Sullivan

IPC: H01J1/148 ,  H01J9/04

Abstract: In one embodiment, a system includes a cathode and a thermionic emitter installed at least partially within the cathode tube of the cathode. The thermionic emitter is in a shape of a hollow cylinder. The hollow cylinder includes an outer surface and an unsmooth inner surface. The outer surface is configured to contact an inner surface of the cathode tube. The unsmooth inner surface includes a plurality of structures that provide an increase in surface area over a smooth surface.

公开(公告)号：US09165737B2

公开(公告)日：2015-10-20

申请号：US13644281

申请日：2012-10-04

Applicant: NuFlare Technology, Inc.

Inventor： Victor Katsap

IPC: H01J19/04 ,  H01J1/14 ,  H01J1/13 ,  H01J9/04 ,  H01J1/148 ,  H01J37/065

CPC classification number: H01J1/14 ,  H01J1/148 ,  H01J9/04 ,  H01J37/065 ,  H01J2237/06308

Abstract: An improved cathode comprises a cone-shaped emitter with a carbon-based coating applied to the emitter cone surface, in which there is a narrow annular gap between the emitter body and the carbon coating. The gap prevents direct contact between the carbon coating and the crystalline emitting material, thereby preventing damaging interactions and extending the useful lifetime of the cathode.

Abstract translation: 改进的阴极包括锥形发射器，其具有施加到发射体锥表面的碳基涂层，其中在发射体和碳涂层之间存在窄的环形间隙。 间隙防止碳涂层和结晶发射材料之间的直接接触，从而防止损坏相互作用并延长阴极的使用寿命。

公开(公告)号：US06903499B2

公开(公告)日：2005-06-07

申请号：US09985737

申请日：2001-11-06

Applicant: Yoshinori Terui ,  Shinpei Hirokawa ,  Katsuyoshi Tsunoda

Inventor： Yoshinori Terui ,  Shinpei Hirokawa ,  Katsuyoshi Tsunoda

IPC: H01J37/06 ,  H01J1/148 ,  H01J1/15 ,  H01J3/02 ,  H01J37/063 ,  H01J37/065 ,  H01J1/02

CPC classification number: H01J3/02 ,  H01J1/148 ,  H01J1/15 ,  H01J37/065

Abstract: An electron gun includes an electron emission cathode, a control electrode, and an extractor and the electron emission cathode is made of rare earth hexaboride. A tip of the electron emission cathode is located between the control electrode and the extractor, and the electron emission surface of the electron emission cathode is spherical or flat.

Abstract translation: 电子枪包括电子发射阴极，控制电极和提取器，电子发射阴极由稀土六硼化物制成。 电子发射阴极的尖端位于控制电极和提取器之间，电子发射阴极的电子发射表面是球形或​​平坦的。

公开(公告)号：US4200555A

公开(公告)日：1980-04-29

申请号：US928528

申请日：1978-07-27

Applicant: David C. Joy ,  Paul H. Schmidt

Inventor： David C. Joy ,  Paul H. Schmidt

IPC: C04B35/58 ,  C30B9/00 ,  C30B13/00 ,  C30B15/00 ,  H01J1/148 ,  H01B1/06

CPC classification number: C04B35/5156 ,  C04B35/5805 ,  C30B13/00 ,  C30B15/00 ,  C30B29/10 ,  C30B9/00 ,  H01J1/148

Abstract: An electron source using an electron emissive material having a composition represented by the nominal atom formula La.sub.x (Nd.sub.y Pr.sub.1-y).sub.1-x B.sub.6 ; x less than 0.5 and greater than 0.2, y less than or equal to 1.0 and greater than or equal to 0.0, is described. The electron source is well suited for use in instruments such as scanning electron microscopes and electron beam exposure systems.

Abstract translation: 使用具有由标称原子式Lax（NdyPr1-y）1-xB6表示的组成的电子发射材料的电子源; x小于0.5且大于0.2，y小于或等于1.0且大于或等于0.0。 电子源非常适合用于扫描电子显微镜和电子束曝光系统等仪器中。

公开(公告)号：US4054946A

公开(公告)日：1977-10-18

申请号：US727466

申请日：1976-09-28

Applicant: Stephen Duncan Ferris ,  David Charles Joy ,  Harry John Leamy ,  Louis David Longinotti ,  Paul Herman Schmidt

Inventor： Stephen Duncan Ferris ,  David Charles Joy ,  Harry John Leamy ,  Louis David Longinotti ,  Paul Herman Schmidt

IPC: H01J1/148 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/148

Abstract: An electron source using a single lanthanum hexaboride crystal oriented so the emitting surface is defined by a {110} crystal plane.

Abstract translation: 使用单个六硼化镧晶体取向的电子源，使得发射表面由{110}晶面定义。