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    Composite gamma-neutron detection system
    61.
    发明授权
    Composite gamma-neutron detection system 有权
    复合γ中子检测系统

    公开(公告)号：US08389941B2

    公开(公告)日：2013-03-05

    申请号：US12976861

    申请日：2010-12-22

    Applicant: Joseph Bendahan ,  Edward James Morton

    Inventor： Joseph Bendahan ,  Edward James Morton

    IPC: G01T1/164

    CPC classification number: H01J43/30 ,  G01T1/16 ,  G01T1/167 ,  G01T1/208 ,  G01T3/06 ,  G01V5/0025 ,  G01V5/0091 ,  H01J40/04 ,  H01J43/08 ,  H01J43/18

    Abstract: The present invention provides a gamma-neutron detector based on mixtures of thermal neutron absorbers that produce heavy-particle emission following thermal capture. The detector consists of one or more thin screens embedded in transparent hydrogenous light guides, which also serve as a neutron moderator. The emitted particles interact with the scintillator screen and produce a high light output, which is collected by the light guides into a photomultiplier tube and produces a signal from which the neutrons are counted. Simultaneous gamma-ray detection is provided by replacing the light guide material with a plastic scintillator. The plastic scintillator serves as the gamma-ray detector, moderator and light guide. The neutrons and gamma-ray events are separated employing Pulse-Shape Discrimination (PSD). The detector can be used in several scanning configurations including portal, drive-through, drive-by, handheld and backpack, etc.

    Abstract translation: 本发明提供了一种基于热中子吸收剂的混合物的γ中子检测器，其在热捕获之后产生重粒子发射。 检测器由一个或多个嵌入在透明氢光导中的薄屏幕组成，也可作为中子调节剂。 发射的颗粒与闪烁体屏幕相互作用并产生高光输出，该光输出由光导收集到光电倍增管中并产生中子被计数的信号。 通过用塑料闪烁体代替导光材料来提供同时的γ射线检测。 塑料闪烁体用作γ射线检测器，调节剂和光导。 使用脉冲形状识别（PSD）分离中子和γ射线事件。 检测器可用于多种扫描配置，包括门禁，驱动器，驱动器，手持和背包等。

    Electron tube with electron lens
    62.
    发明授权
    Electron tube with electron lens 失效
    带电子透镜的电子管

    公开(公告)号：US5917282A

    公开(公告)日：1999-06-29

    申请号：US847261

    申请日：1997-05-01

    Applicant: Motohiro Suyama ,  Yoshihiko Kawai ,  Suenori Kimura ,  Ken Hirano ,  Norio Asakura ,  Tetsuya Morita

    Inventor： Motohiro Suyama ,  Yoshihiko Kawai ,  Suenori Kimura ,  Ken Hirano ,  Norio Asakura ,  Tetsuya Morita

    IPC: G01J1/02 ,  G01J1/42 ,  H01J40/04 ,  H01J43/04 ,  H01J43/08 ,  H01J43/28

    CPC classification number: H01J40/04 ,  H01L31/1075

    Abstract: This invention relates to an electron tube which stabilizes the orbits of electrons accelerated and focused by an electron lens and has a structure for effectively suppressing noise generated due to discharge. This electron tube has, at two ends of an insulating container, a cathode electrode and an anode electrode which constitute the electron lens. Particularly, in the electron tube, one end of the cathode electrode and a photocathode are supported by a conductive member arranged at one end of the insulating container, and the cathode electrode is electrically connected to the photocathode. The cathode electrode partially extends to a stem along the inner wall of the insulating container and is tapered toward the stem so that the distal end portion of the cathode electrode is separated from the inner wall of the insulating container. Therefore, the electron tube realizes, regardless of the size of the insulating container, a structure for preventing the insulating container from being charged and suppressing discharge followed by light emission between the cathode electrode and the insulating container.

    Abstract translation: 本发明涉及一种电子管，其使由电子透镜加速和聚焦的电子的轨道稳定，并且具有有效抑制由放电产生的噪声的结构。 该电子管在绝缘容器的两端具有构成电子透镜的阴极电极和阳极电极。 特别地，在电子管中，阴极电极的一端和光电阴极由布置在绝缘容器的一端的导电构件支撑，并且阴极电连接到光电阴极。 阴极电极沿着绝缘容器的内壁部分地延伸到主管，并且朝向杆逐渐变细，使得阴极电极的远端部分与绝缘容器的内壁分离。 因此，不管绝缘容器的尺寸如何，电子管实现了防止绝缘容器被充电的结构，并且抑制了在阴极电极和绝缘容器之间发光的放电。

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