公开(公告)号：US5289519A

公开(公告)日：1994-02-22

申请号：US958939

申请日：1992-10-09

Applicant: Roy E. Rand

Inventor： Roy E. Rand

IPC: H01J35/04 ,  H01J35/06

CPC classification number: H01J35/04

Abstract: An electron beam scanning system producing an electron beam in a relatively short chamber includes an ion controlling electrode assembly located between the electron gun and system beam optics. The assembly includes a somewhat cone-shaped rotating field ion controlling electrode ("RICE") unit disposed between first and second ion controlling electrode units ("ICE"s). The RICE and ICEs each comprise element pairs symmetrically disposed on opposite sides of the chamber Z-axis, preferably forming regular polygons in cross-section. Preferably corresponding elements in each ICE are electrically coupled to each other and to an opposite element in the RICE. Preferably equal and opposite bias potentials, with respect to an average potential, are coupled to the RICE and ICE elements comprising an element pair. Because it is somewhat cone-shaped, the RICE and electron beam create a transverse electric field with no axial component. Varying the bias potentials rotates the RICE electric field to controllably remove most but not all positive ions. The remaining ions improve the electron beam space-charge density, resulting in a sharply focused scanning electron beam. The ICE units sweep away positive ions in regions within the overall assembly not otherwise acted upon by fields. A single power source provides multiple potentials via a voltage divider, which potentials are switchably coupled to the RICE and ICE units to provide the required element potentials that may be controllably switched to rotate the resultant electric field in a predictable manner. The complete electrode assembly neither displaces nor deflects the emergent electron beam from the Z-axis.

Abstract translation: 在相对短的室中产生电子束的电子束扫描系统包括位于电子枪和系统光束光学器件之间的离子控制电极组件。 组件包括设置在第一和第二离子控制电极单元（“ICE”）之间的稍微锥形的旋转场离子控制电极（“RICE”）单元。 RICE和ICE各自包括对称地设置在腔室Z轴的相对侧上的元件对，优选地在横截面上形成规则的多边形。 优选地，每个ICE中相应的元件彼此电耦合并且与RICE中的相对元件电耦合。 优选地，相对于平均电位的相等和相反的偏置电位耦合到包括元件对的RICE和ICE元件。 因为它有些锥形，所以RICE和电子束产生没有轴向分量的横向电场。 改变偏置电位使RICE电场旋转可控地去除大部分但不是全部的正离子。 剩余的离子可以改善电子束的空间电荷密度，从而产生清晰的扫描电子束。 ICE单元扫除整个组件内的区域中的正离子，否则不会被场所影响。 单个电源通过分压器提供多个电位，该电位可切换地耦合到RICE和ICE单元，以提供所需的元件电位，其可被可控地切换以以可预测的方式旋转所得到的电场。 完整的电极组件既不使发射电子束从Z轴移位也不偏转。

公开(公告)号：US5020086A

公开(公告)日：1991-05-28

申请号：US316235

申请日：1989-02-24

Applicant: Richard S. Peugeot

Inventor： Richard S. Peugeot

IPC: H01J35/04 ,  H01J35/14 ,  H05G1/32

CPC classification number: H05G1/32 ,  H01J35/04 ,  H01J35/14

Abstract: A microfocus type X-ray system in which the electron beam current is generally operated in a milliampere range at a constant power, and the beam is subjected to electronic focusing for selected beam width and steering for directional control.

Abstract translation: 其中电子束电流通常以恒定功率在毫安范围内操作的微焦点型X射线系统，并且对于所选择的光束宽度和光束进行电子聚焦以进行方向控制。

公开(公告)号：US4950962A

公开(公告)日：1990-08-21

申请号：US261910

申请日：1988-10-25

Applicant: Curtis Birnbach ,  Jay Tanner ,  Richard Heese

Inventor： Curtis Birnbach ,  Jay Tanner ,  Richard Heese

IPC: G21K1/02 ,  H01J35/04 ,  H01J35/08 ,  H01J35/14 ,  H05G2/00

CPC classification number: H05G2/00 ,  G21K1/02 ,  H01J35/04 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/087

Abstract: A high voltage switch tube with a central cathode cylindrically symmetric to and surrounded by a tubular anode, with a grid interposed between the cathode and anode. A high negative voltage is applied to the cathode, but the flow of electrons to the anode is blocked by the grid which is held near cathode potential. After a space charge is created at the grid by electrons from the cathode, the grid is pulsed to ground potential, releasing electrons from the cathode to yield a very high current pulse. The cathode is preferably a graphite foam sleeve mounted on a support structure.

Abstract translation: 一个高压开关管，其中心阴极与管状阳极圆柱对称并围绕，阴极和阳极之间插有栅极。 对阴极施加高的负电压，但是电子流向阳极的电流被保持在阴极电位附近的栅极阻挡。 在栅极通过来自阴极的电子产生空间电荷之后，栅格被脉冲到地电位，从阴极释放电子以产生非常高的电流脉冲。 阴极优选为安装在支撑结构上的石墨泡沫套筒。

公开(公告)号：US4852140A

公开(公告)日：1989-07-25

申请号：US061906

申请日：1987-06-11

Applicant: Mark Dax

Inventor： Mark Dax

IPC: H01J35/04 ,  H01J35/10

CPC classification number: H01J35/04 ,  H01J35/101

Abstract: A structure for suppressing arcing in electric current carrying anti-friction bearings operating in a vacuum environment is disclosed having opposed spaced-apart surfaces forming an effective capacitor in parallel with the bearings responsive to temperature to reduce arcing which would otherwise result from current interruption in the bearings.

Abstract translation: 公开了一种用于抑制在真空环境中运行的载流摩擦轴承中的电弧的结构，其具有相对的间隔开的表面，该表面形成与轴承平行的有效电容器，以响应于温度以减少由于电流中断的电流中断而产生的电弧 轴承。

公开(公告)号：US4780903A

公开(公告)日：1988-10-25

申请号：US898998

申请日：1986-08-22

Applicant: Hiroyoshi Soezima

Inventor： Hiroyoshi Soezima

IPC: G21K1/00 ,  G03F7/20 ,  G21K1/06 ,  G21K5/08 ,  G21K7/00 ,  H01J35/00 ,  H01J35/04 ,  H01J35/08 ,  H01L21/027 ,  H05G1/00 ,  A61N5/10

CPC classification number: G21K7/00 ,  G21K1/06 ,  H01J35/00

Abstract: An X-ray source includes a thin film X-ray target for generating and focusing X-rays in response to the application of electron beams, and a capillary tubular element for allowing the X-rays to pass. The capillary tubular element has such a diameter the beams of the X-rays impinging on the inner surfaces of the capillary tubular element are totally reflected. Additionally, a thin film is provided for adsorbing the electron beams, but allowing the X-rays to penetrate.

Abstract translation: X射线源包括用于响应于施加电子束而产生和聚焦X射线的薄膜X射线靶和用于允许X射线通过的毛细管状元件。 毛细管状元件具有这样的直径，即入射到毛细管状元件的内表面上的X射线的光束被完全反射。 此外，提供了用于吸附电子束，但允许X射线穿透的薄膜。

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：US4563769A

公开(公告)日：1986-01-07

申请号：US452013

申请日：1982-12-21

Applicant: Jens U. Madsen

Inventor： Jens U. Madsen

IPC: H01J35/02 ,  H01J35/08 ,  H01J35/14 ,  H01J35/04

CPC classification number: H01J35/08 ,  H01J35/02 ,  H01J35/14

Abstract: In an X-ray generator device a target member emitting X-rays by electron bombardment is arranged in a rod-shaped tubular probe and is provided with a conically tapering front part facing a comparatively narrow aperture in a controlling electron beam diaphragm for the purpose of forming a substantially punctiform radiation source. The position of the target member is adjusted by securing the rod-shaped target member at a part of its length reckoned from its opposite, rearmost end in a central bore of an oblong cylindrical target carrier positioned coaxially in the probe, said target carrier being only at its foremost end connected with the wall of the probe, thereby allowing fine adjustment of the target member with respect to said aperture by displacement of said opposite end of the target carrier in a radial plane in the probe, e.g. by means of wedge means formed as adjusting screws in the annular channel between the target carrier and the inner wall of the probe.

Abstract translation: 在X射线发生器装置中，通过电子轰击发射X射线的目标构件布置在棒状管状探针中，并且在控制电子束光阑中设置有面向较窄孔径的锥形前部，用于 形成基本上点状的辐射源。 目标构件的位置通过将棒状目标构件的长度方向固定在其相对的最后端部的一部分上来调节，该端部位于同轴位于探针中的长圆形目标载体的中心孔中，所述靶载体仅 在其最前端与探针的壁连接，从而允许目标构件相对于所述孔通过在探针中的径向平面中的目标载体的相对端的位移进行微调，例如 通过在目标载体和探针的内壁之间的环形通道中形成为调节螺钉的楔形装置。

公开(公告)号：US4504965A

公开(公告)日：1985-03-12

申请号：US447700

申请日：1982-12-07

Applicant: Hans Ebersberger

Inventor： Hans Ebersberger

IPC: F16C39/06 ,  H01J35/10 ,  H01J35/04

CPC classification number: F16C32/044 ,  H01J35/103 ,  F16C2380/16

Abstract: In the case of tubes with magnetically mounted anodes, it is difficult to obtain an adequately stable mounting of the anode shaft for all stresses to be expected, in particular, in the case of tilting and pivoting. To this end, the disclosure provides that magnetically conductive pole pieces are inserted in the wall of the tube envelope at the locations at which magnets are exteriorly disposed which pole pieces are in magnetic coupling relation with the anode arrangement. The distances between the parts to be magnetically coupled can thereby be substantially reduced, so that there results--in relation to known magnetic bearings--a substantially more stable support-mounting of the rotary anode in the high vacuum envelope. The disclosure is, in particular, applicable in the case of X-ray tubes for utilization in medical X-ray technology.

Abstract translation: 在具有磁性安装的阳极的管的情况下，难以获得足够稳定地安装用于所有应力的阳极轴，特别是在倾斜和枢转的情况下。 为此，本公开内容提供，在磁体外部设置的位置处，导磁极片被插入到管壳的壁中，这些磁极与阳极装置处于磁耦合关系。 因此，要磁耦合的部件之间的距离可以大大减小，从而导致与已知的磁性轴承相关 - 在高真空外壳中旋转阳极的基本上更稳定的支撑安装。 本发明尤其适用于在医疗X射线技术中使用的X射线管的情况。

公开(公告)号：US4359660A

公开(公告)日：1982-11-16

申请号：US216165

申请日：1980-12-15

Applicant: Ian D. Smith ,  Laszlo J. Demeter ,  Kurt E. Nielsen

Inventor： Ian D. Smith ,  Laszlo J. Demeter ,  Kurt E. Nielsen

IPC: H01J35/04 ,  H01J35/00

CPC classification number: H01J35/04

Abstract: A multiple cathode-anode pulsed X-ray source utilizes a first X-ray transparent cathode spaced apart from a solid tungsten first anode between which is disposed a second tungsten anode spaced apart from the first cathode and electrically connected to a second X-ray transparent cathode which is also spaced apart from a solid tungsten first anode. Electrons emitted from the first cathode are caused to bombard the second anode to emit X-radiation therefrom where the electrons are then conducted to and emitted by the second cathode to bombard the first anode to again emit X-radiation therefrom. The X-radiation emitted from the first and second anodes passes through the first and second cathodes to a target.

Abstract translation: 多个阴极 - 阳极脉冲X射线源利用与固体钨第一阳极间隔开的第一X射线透明阴极，在第一X射线透明阴极之间设置与第一阴极间隔开的第二钨阳极，并电连接到第二X射线透明 阴极也与固体钨第一阳极间隔开。 引起从第一阴极发射的电子轰击第二阳极以发射X射线，其中电子然后被传导到第二阴极并由第二阴极发射以轰击第一阳极以再次从其发射X射线。 从第一和第二阳极发射的X射线通过第一和第二阴极到达目标。

公开(公告)号：US4322653A

公开(公告)日：1982-03-30

申请号：US81262

申请日：1979-10-02

Applicant: Dietrich Bader ,  Sieghard Reiprich

Inventor： Dietrich Bader ,  Sieghard Reiprich

IPC: H01J35/04 ,  H01J35/16

CPC classification number: H01J35/04

Abstract: The X-ray apparatus of the present invention comprises a metal cylindrical wall member having a longitudinal axis and opposite open ends. A pair of end members is positioned within the open ends of the wall member, at least one of the end members being an annular ceramic member having a central aperture therein and being sealed at its outer periphery to the wall member. An anode and a cathode are located within the wall member and high voltage leads are connected to the anode and cathode, at least one of these leads passing through the aperture in the ceramic member in a vacuum-tight manner to form a vacuum-tight envelope comprising the wall and end members. At least one connecting member is releasably attached to an end of the wall member adjacent the annular ceramic member thereby providing an axial releasable electrical connection with a high voltage lead. The outer face of the ceramic member is rotationally symmetrical with respect to the longitudinal axis of the wall member and forms an angle not greater than 45.degree. with a plane perpendicular to the longitudinal axis. At least one shielding electrode is disposed within the envelope to prevent impingement of charged particles on the annular ceramic member.

Abstract translation: 本发明的X射线装置包括具有纵向轴线和相对的开口端的金属圆柱形壁构件。 一对端部构件定位在壁构件的开口端内，至少一个端构件是环形陶瓷构件，其中具有中心孔并且在其外围处与壁构件密封。 阳极和阴极位于壁构件内并且高压引线连接到阳极和阴极，这些引线中的至少一个引线以真空密封的方式穿过陶瓷构件中的孔以形成真空密封 包括壁和端部构件。 至少一个连接构件可释放地附接到邻近环形陶瓷构件的壁构件的端部，从而提供与高压引线的轴向可释放的电连接。 陶瓷构件的外表面相对于壁构件的纵向轴线旋转对称，并且与垂直于纵向轴线的平面形成不大于45°的角度。 至少一个屏蔽电极设置在外壳内，以防止带电粒子撞击在环形陶瓷件上。