公开(公告)号：US5332945A

公开(公告)日：1994-07-26

申请号：US881041

申请日：1992-05-11

Applicant: Richard B. True

Inventor： Richard B. True

IPC: H01J23/06 ,  H01J3/02 ,  H01J23/065 ,  H01J29/46 ,  H01J1/46

CPC classification number: H01J3/029 ,  H01J23/065

Abstract: A Pierce electron gun is provided having a cathode, a focusing electrode surrounding the cathode, and an anode disposed a fixed distance from the cathode and having an opening therethrough. The electron gun has at least one grading electrode disposed between the focusing electrode and the anode. The grading electrode controls shape of equipotential lines of an electric potential difference provided between the anode and the cathode, to purposely reduce field gradient levels formed by the electric potential difference. The grading electrode further has a double radial bend having an inner radial curve of a first radius and an outer radial curve of a second radius.

Abstract translation: 提供了一种皮尔斯电子枪，其具有阴极，围绕阴极的聚焦电极以及与阴极设置成固定距离且具有穿过其中的开口的阳极。 电子枪具有设置在聚焦电极和阳极之间的至少一个分级电极。 分级电极控制设置在阳极和阴极之间的电位差的等电位线的形状，以有意地减小由电位差形成的场梯度电平。 分级电极还具有双径向弯曲，其具有第一半径的内径向曲线和第二半径的外径向曲线。

公开(公告)号：US5126633A

公开(公告)日：1992-06-30

申请号：US737240

申请日：1991-07-29

Applicant: Tzvi Avnery ,  Arthur W. Sommerstein ,  Rolfe W. Graham

Inventor： Tzvi Avnery ,  Arthur W. Sommerstein ,  Rolfe W. Graham

IPC: H01J3/02 ,  H01J33/00 ,  H01J37/06

CPC classification number: H01J3/029 ,  H01J33/00 ,  H01J37/06

Abstract: A novel electron beam apparatus and technique wherein a plurality of longitudinally extending heated filaments is employed, each similarly offset laterally of a central longitudinal axis, but with successive filaments alternately disposed on opposite sides of said axis and cooperating with a first low velocity accelerating stage comprising staggered grid slots and openings, and a high velocity second accelerating stage to provide long uniform longitudinal electron beams.

Abstract translation: 一种新颖的电子束装置和技术，其中使用多个纵向延伸的加热细丝，各自类似地偏离中心纵向轴线横向，但是连续的细丝交替地设置在所述轴线的相对侧上并且与第一低速加速台配合，包括 交错网格槽和开口，以及高速第二加速级，以提供长均匀的纵向电子束。

公开(公告)号：US5059859A

公开(公告)日：1991-10-22

申请号：US507798

申请日：1990-04-12

Applicant: Junji Endo ,  Takeshi Kawasaki ,  Masahiro Tomita ,  Shigeto Isakozawa ,  Toshimitu Miyada ,  Yutaka Kaneko

Inventor： Junji Endo ,  Takeshi Kawasaki ,  Masahiro Tomita ,  Shigeto Isakozawa ,  Toshimitu Miyada ,  Yutaka Kaneko

IPC: H01J3/02 ,  H01J37/073

CPC classification number: H01J3/029 ,  H01J37/073

Abstract: A charged particle beam generating apparatus of multi-stage acceleration type includes a charged particle beam source and a multi-stage acceleration tube having a plurality of acceleration electrodes arranged in cascade over a plurality of stages within the tube. A plurality of outer shield electrodes are disposed in concentrical relation on the radially outer side of the multi-stage acceleration tube over the plural stages to be applied with the same potentials as those of the associated acceleration electrodes respectively. Finally, a plurality of dividing resistors are disposed outside of the multi-stage acceleration tube or between the outer shield electrodes and the multi-stage acceleration tube so as to apply predetermined potentials to the acceleration electrodes, respectively.

Abstract translation: 多级加速型的带电粒子束产生装置包括带电粒子束源和多级加速管，该多级加速管具有多个级联地布置在管内的多个级上的加速电极。 多个外屏蔽电极在多级加速管的径向外侧分别配置成相同的电位分别与相关的加速电极相同。 最后，将多个分压电阻器设置在多级加速管的外侧或外屏蔽电极与多级加速管之间，以分别对加速电极施加预定电位。

公开(公告)号：US3983446A

公开(公告)日：1976-09-28

申请号：US160045

申请日：1971-07-06

Applicant: George V. Miram ,  Gerhard B. Kuehne

Inventor： George V. Miram ,  Gerhard B. Kuehne

IPC: H01J3/02 ,  H01J23/065 ,  H01J29/02 ,  H01J29/46

CPC classification number: H01J3/029 ,  H01J23/065 ,  H01J3/026 ,  H01J3/027

Abstract: The electron gun includes a spherically concave cathode emitter with a pair of axially spaced spherically concave focus and control grids closely spaced overlaying the cathode emitter for controlling the beam current. The grids are supported from a common thermally conductive tubular grid support structure via the intermediary of first and second annular members one of which is a thermally conductive insulator. One or more of the grids are serrated about their peripheries to define a plurality of radially directed fingers bonded to the end of a respective annular grid support member. In an alternative embodiment, the end of the annular grid support member, as bonded to the serrated grid, is castellated to accommodate differences in thermal expansion between the grid and the annular grid support member.

Abstract translation: 电子枪包括球形凹阴极发射器，其具有一对轴向间隔开的球形凹焦点和控制栅格，其紧密间隔地覆盖阴极发射器以控制束电流。 栅格由通常的导热管状栅格支撑结构经由第一和第二环形构件的介质支撑，其中一个是导热绝缘体。 一个或多个栅格围绕它们的周边锯齿以限定结合到相应的环形栅格支撑构件的端部的多个径向指向的指状物。 在替代实施例中，环形格栅支撑构件的结合到锯齿形格栅的端部被浇铸以适应栅格和环形栅格支撑构件之间的热膨胀差异。

公开(公告)号：US3980919A

公开(公告)日：1976-09-14

申请号：US535098

申请日：1974-12-20

Applicant: David J. Bates ,  Aris Silzars ,  Lester A. Roberts

Inventor： David J. Bates ,  Aris Silzars ,  Lester A. Roberts

IPC: H01J3/02 ,  H01J29/48 ,  H01J29/56 ,  H01J29/46

CPC classification number: H01J3/029 ,  H01J29/48 ,  H01J29/56

Abstract: A laminar flow electron gun employing a narrow, elongated cathode for forming a rectangular beam and a plurality of electrodes having narrow, elongated apertures cooperating with said cathode to draw electrons from said cathode and operate on the electrons to focus the rectangular beam onto a target by providing a parallel flow region adjacent said cathode, followed by a divergent flow region, in turn, followed by a convergent flow or focusing region.

Abstract translation: 一种层流电子枪，采用窄的细长阴极形成矩形光束，以及多个电极，其具有与所述阴极配合的狭窄细长的孔，以从所述阴极吸取电子，并对电子进行操作，以将矩形光束聚焦在目标上。 提供与所述阴极相邻的平行流动区域，随后是发散流动区域，随后是会聚流动或聚焦区域。

公开(公告)号：US3956634A

公开(公告)日：1976-05-11

申请号：US546137

申请日：1975-01-31

Applicant: Duc Tien Tran ,  Dominique Tronc ,  Jacques Kervizic ,  Claude Perraudin

Inventor： Duc Tien Tran ,  Dominique Tronc ,  Jacques Kervizic ,  Claude Perraudin

IPC: G21K1/093 ,  G21K5/04 ,  H01J3/02 ,  H05H9/04 ,  G01K1/08 ,  G21G4/00 ,  G21K1/08

CPC classification number: H05H9/04 ,  G21K1/093 ,  G21K5/04 ,  H01J3/029

Abstract: A particle accelerator for obtaining high energy particle beams, comprises an accelerating structure S.sub.A, one mirror or two mirrors constituted with magnetic achromatic and stigmatic deviators and a source K of particles located at the entry of the accelerating structure S.sub.A and having an annular shape allowing the accelerated particles having passed twice through the accelerating structure S.sub.A to cross the source K, the axis of the source K being coincidental with the axis of the accelerating stucture S.sub.A. Magnetic fields are determined in such a manner that the mirrors totally reflect the particles having a predetermined energy level and totally transmit the particles having an energy level higher than this predetermined energy level.

Abstract translation: 用于获得高能量粒子束的粒子加速器包括加速结构SA，由磁性消色差和固定偏差构成的一个反射镜或两个反射镜，以及位于加速结构SA的入口处的颗粒的源K，并且具有允许 加速颗粒已经通过加速结构SA两次穿过源K，源K的轴线与加速结构SA的轴线重合。 以这样的方式确定磁场，使得反射镜完全反射具有预定能量级的颗粒，并且将具有高于该预定能级的能级的颗粒全部透射。

公开(公告)号：US3903450A

公开(公告)日：1975-09-02

申请号：US33432573

申请日：1973-02-21

Applicant: HUGHES AIRCRAFT CO

Inventor： FORBESS RONALD A ,  NOLAND JAMES A

IPC: H01J3/02 ,  H01J23/065 ,  H01J29/70

CPC classification number: H01J3/029 ,  H01J23/065

Abstract: A dual-perveance gridded electron gun is disclosed for selectively providing a high-perveance pulsed electron beam and a low-perveance continuous electron beam. A screen grid which projects over a peripheral portion only of an electron emissive cathode surface is disposed between the emissive surface and a control grid which extends substantially across the emissive surface. Relative potentials are applied to the cathode and to the control and screen grids such that in the higher perveance mode substantially all of the cathode emissive surface emits electrons, while in the lower perveance mode electron emission is substantially precluded from the peripheral portion of the emissive surface over which the screen grid projects.

Abstract translation: 公开了一种双重对称网格电子枪，用于选择性地提供高通量脉冲电子束和低通量连续电子束。 仅在电子发射阴极表面的周边部分突出的屏幕网格设置在发射表面和基本上延伸穿过发射表面延伸的控制栅格之间。 相对电位被施加到阴极和控制和屏幕栅格，使得在更高的平均模式中，基本上所有的阴极发射表面发射电子，而在较低的平均模式中，电子发射基本上被排除在发射表面的周边部分 屏幕网格投影。

公开(公告)号：US3381155A

公开(公告)日：1968-04-30

申请号：US47857765

申请日：1965-08-10

Applicant: JACQUES ARNAUD ,  GEORG WENDT

Inventor： JACQUES ARNAUD ,  GEORGE WENDT

IPC: H01J3/02 ,  H01J23/06

CPC classification number: H01J3/029 ,  H01J23/06

公开(公告)号：US3358174A

公开(公告)日：1967-12-12

申请号：US41942964

申请日：1964-12-18

Applicant: GEN ELECTRIC

Inventor： GLENN JR WILLIAM E

IPC: H01J3/02 ,  H01J29/54

CPC classification number: H01J3/029 ,  H01J29/54

公开(公告)号：US3331984A

公开(公告)日：1967-07-18

申请号：US25317863

申请日：1963-01-22

Applicant: VARIAN ASSOCIATES

Inventor： ALLEN JR STANLEY E

IPC: H01J3/02 ,  H01J23/087

CPC classification number: H01J3/027 ,  H01J3/029 ,  H01J23/087