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    Large-area individually addressable multi-beam x-ray system and method of forming same
    2.
    发明授权
    Large-area individually addressable multi-beam x-ray system and method of forming same 有权
    大面积单独寻址多光束x射线系统及其形成方法

    公开(公告)号：US06876724B2

    公开(公告)日：2005-04-05

    申请号：US10051183

    申请日：2002-01-22

    Applicant: Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

    Inventor： Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

    IPC: A61B6/03 ,  A61B6/00 ,  G21K5/02 ,  G21K5/08 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  H01J35/24 ,  H05G1/00 ,  H05G1/34 ,  H01J36/06

    CPC classification number: H01J35/14 ,  A61B6/032 ,  A61B6/4028 ,  B82Y10/00 ,  H01J35/065 ,  H01J35/22 ,  H01J2201/30469 ,  H01J2235/064 ,  H01J2235/068 ,  H05G1/34

    Abstract: A structure to generate x-rays has a plurality of stationary and individually electrically addressable field emissive electron sources with a substrate composed of a field emissive material, such as carbon nanotubes. Electrically switching the field emissive electron sources at a predetermined frequency field emits electrons in a programmable sequence toward an incidence point on a target. The generated x-rays correspond in frequency and in position to that of the field emissive electron source. The large-area target and array or matrix of emitters can image objects from different positions and/or angles without moving the object or the structure and can produce a three dimensional image. The x-ray system is suitable for a variety of applications including industrial inspection/quality control, analytical instrumentation, security systems such as airport security inspection systems, and medical imaging, such as computed tomography.

    Abstract translation: 产生X射线的结构具有多个静电和单独可电寻址的场发射电子源，其具有由诸如碳纳米管的场发射材料组成的衬底。 以预定频率电场电场切换场致发射电子源以可编程序列朝向目标上的入射点发射电子。 产生的x射线的频率和位置与场发射电子源的频率和位置相对应。 发射器的大面积目标和阵列或矩阵可以对来自不同位置和/或角度的物体进行成像，而不移动物体或结构，并可产生三维图像。 x射线系统适用于各种应用，包括工业检测/质量控制，分析仪器，机场安全检查系统等安全系统和计算机断层扫描等医学成像。

    System for calibrating the time axis of an X-ray streak tube
    3.
    发明授权
    System for calibrating the time axis of an X-ray streak tube 失效
    用于校准X射线条纹管的时间轴的系统

    公开(公告)号：US4714825A

    公开(公告)日：1987-12-22

    申请号：US805425

    申请日：1985-12-04

    Applicant: Koichiro Oba

    Inventor： Koichiro Oba

    IPC: H01J35/00 ,  H01J35/06 ,  H01J35/22 ,  G01D18/00

    CPC classification number: H01J35/065 ,  H01J35/22

    Abstract: A system for calibrating the time axis of an X-ray streak tube comprising a light source for generating a train of light pulses and an X-ray tube including a photocathode for receiving the light pulses. Upon receiving the light pulses, the X-ray tube generates a train of X-rays which excite the photocathode of the streak tube causing it to emit an electron beam. The electron beam is scanned by a sweep voltage synchronized with the light pulses and applied across deflection electrodes in the streak tube. The deflected beam impinges on the phosphor screen of the streak tube where the time interval of the streak image is measured.

    Abstract translation: 一种校准X射线条纹管的时间轴的系统，包括用于产生一系列光脉冲的光源和包括用于接收光脉冲的光电阴极的X射线管。 在接收到光脉冲时，X射线管产生一列X射线，激发条纹管的光电阴极使其发射电子束。 通过与光脉冲同步的扫描电压扫描电子束，并施加在条纹管中的偏转电极之间。 偏转光束照射在条纹管的荧光屏上，其中测量条纹图像的时间间隔。

    Electrode structure for controlling electron flow with high transmission efficiency
    4.
    发明授权
    Electrode structure for controlling electron flow with high transmission efficiency 失效
    用于控制高传输效率的电子流的电极结构

    公开(公告)号：US3665236A

    公开(公告)日：1972-05-23

    申请号：US3665236D

    申请日：1970-12-09

    Applicant: ATOMIC ENERGY COMMISSION

    Inventor： GAINES JERRY L ,  EBERT PAUL J ,  MANCEBO LLOYD ,  COOK FREDERICK D

    IPC: H01J19/34 ,  H01J21/02 ,  H01J35/22 ,  H01J35/04

    CPC classification number: H01J35/22 ,  H01J19/34 ,  H01J21/02 ,  H01J2893/0004

    Abstract: Electrode structure for controlling flow of electrons from a cathode to an anode, characterized by the absence of electrodes in the flow path whereby electron flow is substantially unimpeded by physical structure and proceeds with high transmission efficiency. The structure is such as to establish an electron accelerating field and associated flow path between cathode and anode which bulges outwardly about an interposed control electrode and is thus not physically intercepted by same. By virtue of the high efficiency of electron transmission, the electrode structure may be advantageously incorporated in an Xray tube to provide X-ray pulses of increased intensity. In addition, the transmission characteristic in conjunction with the capability of the bulging field to enable the use of relatively small control voltages to govern electron flow render the electrode structure particularly well suited to the attainment of a high amplification factor in a high power amplifier tube for voltage regulation or switching applications.

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