公开(公告)号：US4873468A

公开(公告)日：1989-10-10

申请号：US194638

申请日：1988-05-16

Applicant: George V. Miram ,  Michael C. Green ,  George K. Merdinian

Inventor： George V. Miram ,  Michael C. Green ,  George K. Merdinian

IPC: H01J3/02 ,  H01J33/00

CPC classification number: H01J3/02 ,  H01J33/00

Abstract: A gun for generating a multiple sheet beams 50 of electrons has a flat surfaced cathode 10 with parallel protruding ridges 12 of non-emitting material forming parallel focus electrodes for the sheet beamlets. A control grid of parallel bars 14 is aligned with the ridges 12 to reduce grid interruption. The beamlets may be focussed between support bars 54 of a foil anode 52 for passing the beam into a high-pressure volume such as a gas laser 48. The ridges are formed by inserting non-emissive bent sheets into grooves 58 in the cathode, which are dovetailed to hold them.

Abstract translation: 用于产生电子的多个片材束50的枪具有平坦的表面阴极10，其具有形成用于片状小射束的平行聚焦电极的非发射材料的平行突出脊12。 平行杆14的控制栅格与脊12对准以减少栅格的中断。 子束可以聚焦在箔阳极52的支撑杆54之间，以将光束传递到诸如气体激光器48的高压体积中。脊是通过将非发射弯曲片插入到阴极中的凹槽58中而形成的， 鸠。。。

公开(公告)号：US4847502A

公开(公告)日：1989-07-11

申请号：US84062

申请日：1987-08-11

Applicant: James G. Bradley ,  Joseph M. Conley ,  David B. Wittry

Inventor： James G. Bradley ,  Joseph M. Conley ,  David B. Wittry

IPC: G01Q30/02 ,  G01Q90/00 ,  H01J3/02 ,  H01J37/065

CPC classification number: B82Y10/00 ,  H01J3/02 ,  H01J37/065

Abstract: An electron beam source having a single electron optical axis is provided with two coplanar cathodes equally spaced on opposite sides from the electron optical axis. A switch permits selecting either cathode, and a deflection system comprised of electromagnets, each with separate pole pieces equally spaced from the plane of the cathodes and electron optical axis, first deflects the electron beam from a selected cathode toward the electron optical axis, and then in an opposite direction into convergence with the electron optical axis. The result is that the electron beam from one selected cathode undergoes a sigmoid deflection in two opposite directions, like the letter S, with the sigmoid deflection of each being a mirror image of the other.

Abstract translation: 具有单个电子光轴的电子束源设置有与电子光轴相对等间隔的两个共面阴极。 开关允许选择任一阴极，并且由电磁体组成的偏转系统，每个具有与阴极平面和电子光轴等距离分离的极片，首先将电子束从选定的阴极偏转到电子光轴，然后 在与电子光轴收敛的相反方向上。 结果是，来自一个选定的阴极的电子束在两个相反的方向上经历S形偏转，如字母S，其中每个的S形偏转是另一个的镜像。

公开(公告)号：US4835438A

公开(公告)日：1989-05-30

申请号：US125135

申请日：1987-11-25

Applicant: Robert Baptist ,  Ariel Brenac ,  Gerard Chauvet ,  Robert Meyer ,  Francis Muller

Inventor： Robert Baptist ,  Ariel Brenac ,  Gerard Chauvet ,  Robert Meyer ,  Francis Muller

IPC: G21K1/16 ,  H01J1/304 ,  H01J3/02 ,  H01J37/073

CPC classification number: H01J3/022 ,  G21K1/16 ,  H01J1/3042 ,  H01J37/073 ,  H01J2203/0296

Abstract: Spin polarized electron source using an emissive micropoint cathode. At least one portion of each micropoint, including the top of the latter, is ferromagnetic, so that the electrons emitted by the cathode are spin polarized in a given direction, when the portion is subject to a magnetic field parallel to the given direction.

Abstract translation: 使用发射微点阴极的旋转极化电子源。 每个微点的至少一部分，包括后者的顶部，是铁磁性的，使得阴极发射的电子在给定方向上被自旋极化，当该部分受到平行于给定方向的磁场时。

公开(公告)号：US4749911A

公开(公告)日：1988-06-07

申请号：US31619

申请日：1987-03-30

Applicant: George Wakalopulos ,  Sherman R. Farrell

Inventor： George Wakalopulos ,  Sherman R. Farrell

IPC: H01J27/16 ,  H01J3/02 ,  H01J27/20 ,  H01J37/06 ,  H01J37/077 ,  H01J37/08 ,  H01S3/038 ,  H01S3/0959 ,  H02K39/00

CPC classification number: H01J3/021 ,  H01S3/038 ,  H01S3/0959

Abstract: An ion plasma electron gun for the generation of large area electron beams with uniform electron distribution. Positive ions generated by a wire in a plasma discharge chamber are accelerated through an extraction grid into a second chamber containing a high voltage cold cathode. These positive ions bombard a surface of the cathode causing the cathode to emit secondary electrons which form an electron beam. After passage through an extraction grid and plasma discharge chamber, the electron beam exits from the gun by way of a second grid and a foil window supported on the second grid. The gun is constructed so that the electron beam passing through the foil window has a relatively large area and uniform electron distribution which is substantially the same as the ion distribution of the ion beam impinging upon the cathode. A target and comparison circuit are functionally connected to a current control power supply for the positive ion source which in combination are capable of maintaining the output of secondary electrons emitting from the foil window substantially constant.

Abstract translation: 一种用于产生具有均匀电子分布的大面积电子束的离子等离子体电子枪。 通过等离子体放电室中的线产生的正离子通过提取栅格被加速到包含高压冷阴极的第二室中。 这些正离子轰击阴极的表面，导致阴极发射形成电子束的二次电子。 在通过提取格栅和等离子体放电室之后，电子束通过第二格栅和支撑在第二格栅上的箔窗口从枪射出。 枪的构造使得通过箔窗的电子束具有相当大的面积和均匀的电子分布，其基本上与入射到阴极上的离子束的离子分布相同。 目标和比较电路在功能上连接到正离子源的电流控制电源，其结合能够维持从箔窗口发射的二次电子的输出基本恒定。

公开(公告)号：US4703228A

公开(公告)日：1987-10-27

申请号：US770386

申请日：1985-08-28

Applicant: William P. West

Inventor： William P. West

IPC: H01J3/02 ,  H01J23/04 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

CPC classification number: H01J23/04 ,  H01J3/021 ,  H01J2201/342

Abstract: An electron gun for emitting a modulated electron beam. The gun includes an evacuated envelope having an output end with a photocathode positioned in the envelope and responsive to light to emit electrons. An anode is positioned between the photocathode and the output end for accelerating the electrons emitted by the photocathode. The gun further includes a source of potential interconnecting the anode and the photocathode for maintaining the anode electrostatically positive relative to the photocathode. A first laser provides a first laser beam at a first frequency illuminating the photocathode, and a second laser provides a second laser beam at a second frequency illuminating the photocathode at the same time. The first frequency differs from the second frequency by a beat frequency, whereby the photocathode provides the electron beam with the electrons spacially bunched in accordance with the beat frequency. A method of providing a modulated electron beam is also disclosed.

Abstract translation: 一种用于发射调制电子束的电子枪。 枪包括具有输出端的抽真空的外壳，光电阴极定位在外壳中并且响应于光发射电子。 阳极位于光电阴极和输出端之间，用于加速由光电阴极发射的电子。 枪还包括将阳极和光电阴极相互连接的电位源，用于相对于光电阴极静电地保持阳极。 第一激光器以照射光电阴极的第一频率提供第一激光束，第二激光器以同时照射光电阴极的第二频率提供第二激光束。 第一频率与第二频率不同于拍频，由此光电阴极根据拍频提供电子束与电子空间聚束。 还公开了一种提供调制电子束的方法。

公开(公告)号：US4642522A

公开(公告)日：1987-02-10

申请号：US621420

申请日：1984-06-18

Applicant: Robin J. Harvey ,  Hayden E. Gallagher ,  Robert W. Schumacher

Inventor： Robin J. Harvey ,  Hayden E. Gallagher ,  Robert W. Schumacher

IPC: H01J3/02 ,  H01J17/38 ,  H01J17/44 ,  H01J27/06 ,  H01J37/077 ,  H01S3/097 ,  H01J7/24

CPC classification number: H01J3/021

Abstract: An improved Wire-Ion-Plasma Electron-gun (WIP E-gun) is disclosed, having a very rapid electron beam current interruption capability. An auxiliary grid is employed to provide a potential barrier to the reservoir of plasma ions in the ionization chamber, thereby containing these ions in the chamber after the wire anode is turned "OFF". The E-gun current fall time is reduced to the time required for the plasma potential to fall in the ionization chamber after the wire anode is turned "OFF". The WIP E-gun current fall time is reduced, from greater than fifteen microseconds for devices not employing the invention, to less than two microseconds.

Abstract translation: 公开了一种改进的线离子等离子体电子枪（WIP E-gun），具有非常快的电子束电流中断能力。 辅助栅格用于为电离室中的等离子体离子的储存器提供势垒，从而在电极阳极“断开”之后，在室内容纳这些离子。 电子枪电流下降时间减少到电线阳极转为“关闭”后等离子体电势落入电离室所需的时间。 WIP电子枪电流下降时间从不超过十五微秒用于不使用本发明的器件减少到小于两微秒。

公开(公告)号：US4628226A

公开(公告)日：1986-12-09

申请号：US647625

申请日：1984-09-05

Applicant: Dieter Kurz ,  Norbert Schafer

Inventor： Dieter Kurz ,  Norbert Schafer

IPC: H01J3/02 ,  H01J37/073 ,  H05B39/00 ,  H01J19/32

CPC classification number: H01J37/073 ,  H01J3/021 ,  H01J2237/06316

Abstract: The invention is directed to a method of preventing cathode damage when switching on an electron gun having a field emission cathode assembly including a cathode, a first electrode and a ground electrode. During normal operation of the electron gun, an extraction voltage is applied across the cathode and the first electrode and an accelerating voltage is applied across the cathode and the ground electrode. A direct galvanic connection is established between the cathode and the first electrode prior to normal operation of the electron gun. During a burn-in period, only the accelerating voltage is applied. This accelerating voltage may include an overvoltage of up to twenty percent. Then the galvanic connection between the cathode and the first electrode is interrupted and the extraction voltage is applied. An arrangement for carrying out the invention is also disclosed.

Abstract translation: 本发明涉及一种当接通具有包括阴极，第一电极和接地电极的场致发射阴极组件的电子枪时防止阴极损伤的方法。 在电子枪的正常操作期间，在阴极和第一电极之间施加提取电压，并且跨越阴极和接地电极施加加速电压。 在电子枪正常操作之前，在阴极和第一电极之间建立直接电偶连接。 在老化期间，仅施加加速电压。 该加速电压可能包括高达百分之二十的过电压。 然后中断阴极和第一电极之间的电流连接，并施加提取电压。 还公开了用于实施本发明的装置。

公开(公告)号：US4621213A

公开(公告)日：1986-11-04

申请号：US626996

申请日：1984-07-02

Applicant: Roy E. Rand

Inventor： Roy E. Rand

IPC: H01J3/02 ,  H01J23/06 ,  H01J35/04 ,  H01J1/00

CPC classification number: H01J3/028 ,  H01J23/06 ,  H01J35/04

Abstract: An electron gun which can be easily disassembled to replace a defective cathode assembly and which can be easily and quickly reassembled and realigned.

Abstract translation: 一种电子枪，可以轻松地拆卸，以更换有缺陷的阴极组件，并且可以方便快速地重新组装和重新对准。

公开(公告)号：US4596942A

公开(公告)日：1986-06-24

申请号：US579950

申请日：1984-02-14

Applicant: Chuhei Oshima ,  Yoshio Ishizawa

Inventor： Chuhei Oshima ,  Yoshio Ishizawa

IPC: H01J37/073 ,  H01J1/16 ,  H01J1/22 ,  H01J3/02 ,  H01J19/10

CPC classification number: H01J37/073

Abstract: A field emission type electron gun comprises a cathode, a plurality of anodes opposing in series to the cathode and a filament for heating the anodes, all being contained in a vacuum tube. The filament is placed immediately before a first anode directly opposing the cathode in a symmetrical manner so as to serve both as a gas expelling member and as an anode.

Abstract translation: 场发射型电子枪包括阴极，与阴极串联的多个阳极和用于加热阳极的灯，全部被包含在真空管中。 灯丝立即放置在直接与阴极对置的第一阳极之前，以对称的方式放置，以便同时用作气体排出构件和阳极。

公开(公告)号：US4591754A

公开(公告)日：1986-05-27

申请号：US724948

申请日：1985-04-22

Applicant: Hirotoshi Hagiwara ,  Hideo Hiraoka ,  Masaji Ishii

Inventor： Hirotoshi Hagiwara ,  Hideo Hiraoka ,  Masaji Ishii

IPC: H01J37/06 ,  H01J1/16 ,  H01J1/304 ,  H01J3/02 ,  H01J37/073 ,  H01J19/10

CPC classification number: H01J1/304 ,  H01J37/073

Abstract: An electron gun for high brightness including a LaB.sub.6 single crystal cathode having a (100) plane on at least part of a main electron beam emission surface of a cathode tip having a top and a Wehnelt having a tapered surface defining an interior angle similar to or greater than a vertical angle of said cathode tip.

Abstract translation: 一种用于高亮度的电子枪，包括在具有顶部的阴极尖端的主电子束发射表面的至少一部分上具有（100）面的LaB6单晶阴极，并且具有限定与 大于所述阴极尖端的垂直角度。