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    Diverging beam electron gun for a toxic remediation device with a dome-shaped focusing electrode
    2.
    发明授权
    Diverging beam electron gun for a toxic remediation device with a dome-shaped focusing electrode 失效
    发射束电子枪用于具有圆顶形聚焦电极的有毒修复装置

    公开(公告)号：US5623183A

    公开(公告)日：1997-04-22

    申请号：US408210

    申请日：1995-03-22

    申请人： Curtis G. Allen ,  Richard B. True

    发明人： Curtis G. Allen ,  Richard B. True

    IPC分类号： H01J37/063

    CPC分类号： H01J37/063 ,  B01D53/007 ,  B01D2259/812 ,  H01J2237/083 ,  H01J2237/3165

    摘要： An electron gun for use in remediation of hazardous volatile organic compounds is provided. The electron gun comprises a cathode having a concave emitting surface and a dome-shaped focusing electrode concentrically surrounding the emitting surface. The focusing electrode has an inwardly protruding lip portion that extends at least partially into a beam focusing region defined in front of the emitting surface. A target grid is spaced from the cathode and a negative voltage is applied between the emitting surface and the target. The target grid has a surface area that is substantially larger than an associated surface area of the emitting surface. An electron beam is provided by the emitting surface in response to the negative voltage, and is focused into a broad diverging beam by the focusing electrode. The electron gun may be configured for temperature limited emission or space charge limited emission.

    摘要翻译： 提供了用于修复有害挥发性有机化合物的电子枪。 电子枪包括具有凹发射表面的阴极和同心地围绕发射表面的圆顶形聚焦电极。 聚焦电极具有向内突出的唇部，其至少部分地延伸到限定在发射表面前面的束聚焦区域。 目标栅极与阴极间隔开，并且在发射表面和靶之间施加负电压。 目标栅格具有基本上大于发射表面的相关表面积的表面积。 电子束由发射表面响应于负电压提供，并且被聚焦电极聚焦成宽的发散光束。 电子枪可以被配置用于温度限制发射或空间电荷限制发射。

    X-ray tube providing variable imaging spot size
    3.
    发明授权
    X-ray tube providing variable imaging spot size 失效
    X射线管提供可变成像光斑尺寸

    公开(公告)号：US06236713B1

    公开(公告)日：2001-05-22

    申请号：US09179805

    申请日：1998-10-27

    申请人： Richard B. True ,  James C. Taylor ,  Christopher P. Ferrari ,  Curtis G. Allen ,  Thomas M. Bemis

    发明人： Richard B. True ,  James C. Taylor ,  Christopher P. Ferrari ,  Curtis G. Allen ,  Thomas M. Bemis

    IPC分类号： H01J3514

    CPC分类号： H01J35/06 ,  H01J3/12 ,  H01J35/14

    摘要： A variable spot size x-ray tube comprises a cathode having an electron emitting surface providing an electron beam that travels essentially along the tube axis of symmetry to an anode. The anode, spaced from the cathode, includes a target, the front surface of which is disposed at an oblique angle with respect to the axis of symmetry. The potential of the anode is generally positive with respect to that of the cathode. The cathode is heated to a temperature at which electrons are emitted by the thermionic emission process. Current from the cathode can be controlled by varying the cathode temperature if the cathode is operated in the temperature limited region. The incident electron beam forms a spot on the target surface whereupon x-rays are produced in response to impingement of the electron beam on the target. The x-rays propagate outwardly from the target spot through a vacuum window to form a beam of x-radiation outside the x-ray tube. An aperture grid is disposed between the cathode and the anode, and has a central aperture permitting the electron beam to pass therethrough. The aperture grid further has a variable voltage applied to it which may be positive, negative, or equal to the potential of the cathode. The voltage on the control grid is used to control the diameter of the electron beam which impinges upon the target. Specifically, the electron beam diameter varies in correspondence with the variable aperture grid voltage, and selective variation of the electron beam diameter results in a corresponding variation in size of the x-ray imaging spot.

    摘要翻译： 可变点尺寸x射线管包括具有电子发射表面的阴极，该电子发射表面提供基本上沿着管对称轴线向阳极行进的电子束。 与阴极间隔开的阳极包括靶，其前表面相对于对称轴线倾斜设置。 阳极的电位通常相对于阴极的电位为正。 将阴极加热到通过热离子发射过程发射电子的温度。 如果阴极在温度限制区域中运行，则可以通过改变阴极温度来控制来自阴极的电流。 入射的电子束在目标表面上形成一个点，因此响应于电子束撞击靶而产生X射线。 x射线从靶点向外传播通过真空窗口，以在x射线管外部形成x辐射束。 孔栅格设置在阴极和阳极之间，并且具有允许电子束通过的中心孔。 孔径栅格还具有施加到其上的可变电压，其可以是正的，负的或等于阴极的电位。 控制网格上的电压用于控制撞击目标的电子束的直径。 具体地，电子束直径与可变孔径栅极电压相对应地变化，并且电子束直径的选择性变化导致x射线成像光斑的尺寸的相应变化。

    Electron window for toxic remediation device with a support grid having diverging angle holes
    4.
    发明授权
    Electron window for toxic remediation device with a support grid having diverging angle holes 失效
    用于具有发散角孔的支撑网格的有毒修复装置的电子窗口

    公开(公告)号：US5621270A

    公开(公告)日：1997-04-15

    申请号：US408474

    申请日：1995-03-22

    申请人： Curtis G. Allen

    发明人： Curtis G. Allen

    IPC分类号： B01D53/32 ,  H01J5/18 ,  H01J33/04

    CPC分类号： H01J33/04 ,  B01D53/323 ,  H01J5/18 ,  H01J2237/164

    摘要： An improved electron window is provided for use with a diverging electron beam for use in remediation of hazardous volatile organic compounds. The electron window comprises a support grid having a plurality of circular holes disposed in a diverging bolt circle pattern. Individual electrons of the diverging electron beam pass through respective ones of the plurality of holes. A barrier is provided on a downstream side of the support grid so that the individual electrons pass through the barrier. The circular holes are each of substantially uniform diameter. The diverging bolt circle pattern further comprises a single one of the holes substantially centered on the support grid, and a plurality of groups of the holes concentrically disposed around the single one of the holes. Each of the groups of the holes is disposed in a circular pattern. A number of the holes defined within successive ones of the plurality of groups of holes increases arithmetically as an associated diameter of the circular patterns increases. Also, an associated angle of the holes defined within successive ones of the plurality of groups of holes increases as an associated diameter of the circular patterns increases. The diverging electrons are transmitted through the support grid at a maximum rate of efficiency without undesired interception with the surfaces of the grid holes.

    摘要翻译： 提供了一种改进的电子窗，用于与有争议的挥发性有机化合物的修复中使用的发散电子束。 电子窗包括具有以发散螺栓圆圈图案布置的多个圆形孔的支撑格栅。 发散电子束的单个电子通过多个孔中的相应电子。 在支撑栅格的下游侧设有屏障，使得各个电子通过屏障。 圆孔各自具有基本均匀的直径。 发散螺栓圆形图案还包括基本上位于支撑格栅上的单个孔，以及围绕单个孔的同心设置的多组孔。 孔的每一组以圆形图案设置。 在圆形图案的相关联的直径增加时，在多组孔中的连续的孔组中限定的多个孔数值地增加。 此外，当圆形图案的相关直径增加时，限定在多组孔中的连续孔中的孔的相关角度增加。 发散的电子以最大效率的速率传输通过支撑栅格，而不会不期望地与栅格孔的表面截取。

    Traveling wave tube with thermally-insensitive loss button structure
    5.
    发明授权
    Traveling wave tube with thermally-insensitive loss button structure 失效
    旅行波管具有热不敏感损失按钮结构

    公开(公告)号：US5391963A

    公开(公告)日：1995-02-21

    申请号：US968417

    申请日：1992-10-29

    申请人： Curtis G. Allen ,  David H. Perrone ,  David M. Rossi

    发明人： Curtis G. Allen ,  David H. Perrone ,  David M. Rossi

    IPC分类号： H01J23/30

    CPC分类号： H01J23/30

    摘要： A loss button for a traveling wave tube. The front and rear planar surfaces of the ceramic pill-shaped button body are of coated metallic composition. The periphery is uncoated to permit r.f. energy to enter the button through thee cavity of the planar, metallic spacer into which the button is inserted. By coating the body surfaces, the button itself acts as a resonant cavity for attenuation of a predetermined bandwidth so that the dimensional changes that occur during heating to the surrounding and adjacent metallic elements, including the cavity in the spacer for receiving the button and the adjacent braze washers, will not affect the attenuation band of the tube.

    摘要翻译： 行波管的损失按钮。 陶瓷片状按钮体的前后平面是具有金属组成的涂层。 外围是未涂覆的，以允许r.f. 能量通过按钮插入其中的平面金属间隔件的空腔进入按钮。 通过涂覆身体表面，按钮本身用作用于衰减预定带宽的谐振腔，使得在加热期间发生的周围和相邻金属元件（包括用于接收按钮的间隔件中的空腔）和相邻的金属元件 钎焊垫圈，不会影响管的衰减带。

    Traveling wave tube with plate for bonding thermally-mismatched elements
    6.
    发明授权
    Traveling wave tube with plate for bonding thermally-mismatched elements 失效
    行波管与板结合热失配元件

    公开(公告)号：US5402032A

    公开(公告)日：1995-03-28

    申请号：US968416

    申请日：1992-10-29

    申请人： Curtis G. Allen ,  David H. Perrone ,  David M. Rossi

    发明人： Curtis G. Allen ,  David H. Perrone ,  David M. Rossi

    IPC分类号： B23K35/00 ,  C04B37/02 ,  H01J23/00 ,  H01J23/30

    CPC分类号： C04B37/026 ,  B23K35/007 ,  H01J23/005 ,  H01J23/30 ,  C04B2237/122 ,  C04B2237/123 ,  C04B2237/125 ,  C04B2237/366 ,  C04B2237/403 ,  C04B2237/54 ,  C04B2237/72 ,  C04B2237/76

    摘要： A method for bonding thermally-mismatched elements of a traveling wave tube employs a metallic plate of undulating character. The plate is located at the region of the interface between tube elements formed of materials of materially-differing thermal character such as the ceramic termination piece and an adjacent sever pole piece of copper. Through either a brazing or a sintering process, pluralities of bonds are formed at points of tangency between the plate and the two elements of differing thermal expansion coefficients. As a result, a good heat flow path, accompanied by a more stable r.f. interface, is formed between the materials that is not subject to fracture as are prior art diffusion bonds.

    摘要翻译： 用于结合行波管的热失配元件的方法采用波动特性的金属板。 该板位于由具有实质上不同的热特性的材料形成的管元件之间的界面区域，例如陶瓷端接件和相邻的铜极片。 通过钎焊或烧结工艺，在板和不同热膨胀系数的两个元件之间的相切点处形成多个键。 结果，良好的热流路径，伴随着更稳定的r.f. 界面，在现有技术的扩散接合之间形成在不会破裂的材料之间。