公开(公告)号：US20180292546A1

公开(公告)日：2018-10-11

申请号：US15994123

申请日：2018-05-31

Applicant: DAI NIPPON PRINTING Co., Ltd.

Inventor： Tomohisa MOTOMURA ,  Kohei OTA ,  Toru TANIMORI ,  Atsushi TAKADA ,  Taito TAKEMURA

IPC: G01T1/18 ,  H01J47/06 ,  G01T5/00

CPC classification number: G01T1/18 ,  G01T5/00 ,  H01J47/06

Abstract: A radiation detection element includes a plurality of pixel electrodes, each pixel electrodes including a first electrode placed on the first surface of an insulating member and having an opening portion and a second electrode placed at the opening portion of the first electrode. The plurality of pixel electrodes is arrayed in the row direction and the column direction. The pitch of the pixel electrodes in the row direction and the column direction is 380 μm or less. An area ratio between the first electrode and the second electrode falls within the range of 14.5:1 to 154.6:1.

公开(公告)号：US20180239036A1

公开(公告)日：2018-08-23

申请号：US15935097

申请日：2018-03-26

Applicant: DAI NIPPON PRINTING Co., Ltd.

Inventor： Kohei OTA ,  Motonori OHNO

IPC: G01T1/24

CPC classification number: G01T1/241 ,  G01T1/2018 ,  G01T1/29 ,  G01T1/2935 ,  G01T1/2985 ,  H01J47/06

Abstract: A radiation image forming apparatus includes a detection unit including a plurality of Compton cameras. Each of the plurality of Compton cameras including a radiation detection device that includes a plurality of pixels, each configured to detect an electron generated by the track of a recoil electron generated by Compton scattering, and is configured to output a detection signal configured to specify the position of a pixel that has detected the electron and a time when the pixel has detected the electron, and a detection module configured to detect the incident position of scattered γ rays generated by the Compton scattering. The plurality of the Compton cameras arranged annularly to surround a region in which a specimen is placed.

公开(公告)号：US20120119095A1

公开(公告)日：2012-05-17

申请号：US13202618

申请日：2010-02-22

Applicant: Carlos Alberto Nabais Conde ,  Filipa Isabel Gouveia De Melo Borges Belo Soares ,  Sergio José Coelho Do Carmo ,  João Carlos Raimundo Mariquito

Inventor： Carlos Alberto Nabais Conde ,  Filipa Isabel Gouveia De Melo Borges Belo Soares ,  Sergio José Coelho Do Carmo ,  João Carlos Raimundo Mariquito

IPC: G01T1/205

CPC classification number: H01J47/06 ,  G01T1/18

Abstract: The present invention deals with a Multigrid High Pressure Gas Proportional Scintillation Counter for the detection of ionizing radiation such as X-rays, gamma-rays, electrons or other charged leptons, alpha-particles or other charged particles as well as neutrons, which gives information about the energy dissipated in the gas and the time of occurrence of the detection, through an electronic pulse with an amplitude approximately proportional to that energy. It is essentially characterized by: having external metallic walls (1) at ground potential, being filled at a pressure in the 1-100 atmosphere range with a pure noble gas and/or continuously purified, or in mixtures, having: a reflective CsI photocathode (7); four metallic grids: G1 (2), G2 (3), G3 (4) and G4 (5) made of thin wire and with high optical transmission, superior to 70%, defining five regions delimited by these grids (2, 3, 4, 5), by the entrance radiation window (6) and by the photocathode (7), having the high voltages of the several grids applied through feedthroughs (9), producing appropriate electric fields in the several regions of the detector, that do not vary with the time.

Abstract translation: 本发明涉及一种用于检测诸如X射线，γ射线，电子或其他带电荷的光子，α-粒子或其他带电粒子以及中子的电离辐射的多栅格高压气体比例闪烁计数器，其提供信息 关于在气体中消耗的能量和发生检测的时间，通过具有与该能量大致成比例的幅度的电子脉冲。 其基本特征在于：具有处于地电位的外部金属壁（1），以纯惰性气体和/或连续纯化或混合物在1-100气氛范围内的压力下填充，其具有：反射型CsI光电阴极 （7）; 四个金属网格：G1（2），G2（3），G3（4）和G4（5），由细线制成，光学透光率高于70％，定义了由这些格栅（2,3， 通过入射辐射窗（6）和光电阴极（7），具有通过馈通（9）施加的几个栅极的高电压，在检测器的几个区域中产生适当的电场 不随时间变化。

公开(公告)号：US07791020B2

公开(公告)日：2010-09-07

申请号：US12059850

申请日：2008-03-31

Applicant: Marek Uncovsky ,  Milos Toth ,  William Ralph Knowles

Inventor： Marek Uncovsky ,  Milos Toth ,  William Ralph Knowles

IPC: H01J37/244 ,  H01J37/28 ,  H01J37/252

CPC classification number: H01J37/244 ,  H01J37/28 ,  H01J47/06 ,  H01J2237/24445 ,  H01J2237/2448 ,  H01J2237/2605

Abstract: A novel detector for a charged particle beam system which includes multiple gas amplification stages. The stages are typically defined by conductors to which voltage are applied relative to the sample or to a previous stage. By creating cascades of secondary electrons in multiple stages, the gain can be increased without causing dielectric breakdown of the gas.

Abstract translation: 一种用于带电粒子束系统的新型检测器，其包括多个气体放大级。 这些级通常由相对于样品施加电压的导体或前一级定义。 通过在多级中产生二级电子级联，可以增加增益，而不会导致气体的介质击穿。

公开(公告)号：US06967329B2

公开(公告)日：2005-11-22

申请号：US10308303

申请日：2002-12-03

Applicant: Heikki Johannes Sipilä ,  Erkki Sakari Kiuru

Inventor： Heikki Johannes Sipilä ,  Erkki Sakari Kiuru

IPC: G01T1/172 ,  G01T1/18 ,  G01T1/29 ,  G01T1/185

CPC classification number: H01J47/06 ,  G01T1/18 ,  G01T1/2935

Abstract: The invention relates to a radiation detector, an arrangement and a method for an energy-dispersive detection of X-ray photons. X-ray photons are allowed to collide (701) in the radiation detector (201, 601), whereby there are produced (702, 703, 704, 705, 706, 707, 708) observations of the X-ray photons that collided in the detector. According to the invention, there are separately produced observations of X-ray photons (702, 703, 704) that collided in the first detector space (205, 501) of the radiation detector and X-ray photons (705, 706, 707, 708) that collided in the second detector space (206, 502) of the radiation detector. The (712) observations of X-ray photons that collided in the first detector space (205, 501) are ignored, when there is received a simultaneous observation of an X-ray photon that collided in the second detector space.

Abstract translation: 本发明涉及一种用于X射线光子的能量色散检测的放射线检测器，装置和方法。 允许X射线光子在辐射检测器（201,601）中碰撞（701），由此产生（702,703,704,705,706,707,708）观察到的相互碰撞的X射线光子 检测器。 根据本发明，分别产生在辐射检测器的第一检测器空间（205,501）和X射线光子（705,706,707）中碰撞的X射线光子（702,703,704）的观测值， 708），其在辐射检测器的第二检测器空间（206,502）中相撞。 当接收到在第二检测器空间中碰撞的X射线光子的同时观察时，忽略在第一检测器空间（205,501）中相撞的X射线光子的（712）观察结果。

公开(公告)号：US5349194A

公开(公告)日：1994-09-20

申请号：US011636

申请日：1993-02-01

Applicant: Craig R. Wuest ,  Richard M. Bionta

Inventor： Craig R. Wuest ,  Richard M. Bionta

IPC: H01J47/06 ,  G01J5/28 ,  H01J40/06

CPC classification number: H01J47/06

Abstract: A microgap ultra-violet detector of photons with wavelengths less than 400 run (4000 Angstroms) which comprises an anode and a cathode separated by a gas-filled gap and having an electric field placed across the gap. Either the anode or the cathode is semi-transparent to UV light. Upon a UV photon striking the cathode an electron is expelled and accelerated across the gap by the electric field causing interactions with other electrons to create an electron avalanche which contacts the anode. The electron avalanche is detected and converted to an output pulse.

Abstract translation: 具有波长小于400nm（4000埃）的光子的微间隙紫外检测器，其包括由气体填充的间隙分隔开并具有横跨间隙的电场的阳极和阴极。 阳极或阴极对于紫外线都是半透明的。 当UV光子撞击阴极时，电子被电场排出并通过电场加速跨越间隙，引起与其他电子的相互作用以产生接触阳极的电子雪崩。 电子雪崩被检测并转换成输出脉冲。

公开(公告)号：US4954710A

公开(公告)日：1990-09-04

申请号：US343627

申请日：1989-04-27

Applicant: Vincent Comparat ,  Jean Ballon ,  Pierre Carrechio ,  Alain Pelissier

Inventor： Vincent Comparat ,  Jean Ballon ,  Pierre Carrechio ,  Alain Pelissier

IPC: H01J37/244 ,  G01T1/18 ,  H01J47/00 ,  H01J47/06 ,  H01J49/06

CPC classification number: H01J47/06 ,  H01J47/008

Abstract: An X-ray gas detector for analyzing a material by studying X-ray diffraction. In order to minimize the parallax error without resorting to auxiliary electrodes, difficult to manufacture, a radial field in the whole gas space (40) is generated only by means of input electrodes (36) set to appropriate voltages and by means of lateral electrodes (44) also individually set to appropriate voltages. By modifying the voltages, it is also possible to move the center of the spheric equipotentials for permitting the analysis without parallax error of samples (20) placed at variable distances (D) from mthe input window (32) of the detector.

Abstract translation: 一种用于通过研究X射线衍射分析材料的X射线气体检测器。 为了最小化视差误差而不借助于辅助电极，难以制造，整个气体空间（40）中的径向场仅通过设置为适当电压的输入电极（36）和借助于横向电极（ 44）也单独设置为适当的电压。 通过修改电压，也可以移动球面等电位的中心，以允许分析，而不会在距离检测器的输入窗口（32）处置于可变距离（D）处的样本（20）的视差误差。

公开(公告)号：US4670656A

公开(公告)日：1987-06-02

申请号：US560960

申请日：1983-12-13

Applicant: Craig Bolon

Inventor： Craig Bolon

IPC: G01N27/447 ,  G01T1/169 ,  G01T1/185 ,  G01T1/29 ,  H01J47/06

CPC classification number: H01J47/06 ,  G01N27/44717 ,  G01T1/169 ,  G01T1/185 ,  G01T1/2942

Abstract: A process for precision measurement of charged particle emissions from a surface and an apparatus for providing a high resolution digital image of the distribution of such emissions in a minimum exposure time over a relatively large surface area. The process of measurement uses the direction of emissions as determined by two or more position measuring elements of an area detector. The apparatus is based on multiple region detector elements that employ proportional amplification of ionization in a gas.

Abstract translation: 一种用于精确测量来自表面的带电粒子发射的方法和用于在相对大的表面积上以最小曝光时间提供这种发射分布的高分辨率数字图像的装置。 测量过程使用由区域检测器的两个或更多个位置测量元件确定的排放方向。 该装置基于在气体中采用电离比例放大的多个区域检测器元件。

公开(公告)号：US4598204A

公开(公告)日：1986-07-01

申请号：US715948

申请日：1985-03-25

Applicant: Serge M. Bras

Inventor： Serge M. Bras

IPC: G01T1/29 ,  H01J47/06 ,  G01T1/185

CPC classification number: H01J47/06 ,  G01T1/2935

Abstract: A detector is provided comprising two insulating supports (44,46) in the form of half cylinders, provided on their cylindrical wall with a small pitch thread, said supports being fixed by their ends to a mounting frame (40) which holds them spaced apart and parallel, with their cylindrical wall turned outwardly, a cathode wire (60) being wound around the threaded portion of said supports and an anode wire being stretched inside the coil, between two terminals carried by the frame.

Abstract translation: 提供了一种检测器，其包括半圆形形式的两个绝缘支撑件（44,46），其设置在其圆柱形壁上具有小螺距螺纹，所述支撑件通过其端部固定到安装框架（40）上，所述安装框架将它们间隔开 并且平行地，其圆柱形壁向外转动，阴极线（60）缠绕在所述支撑件的螺纹部分上，阳极线在线圈内拉伸，在框架承载的两个端子之间。

公开(公告)号：US3983398A

公开(公告)日：1976-09-28

申请号：US528024

申请日：1974-11-29

Applicant: Douglas P. Boyd

Inventor： Douglas P. Boyd

IPC: A61B6/03 ,  G01N23/04 ,  G01T1/29 ,  G06Q50/00 ,  G06T1/00 ,  H01J47/06 ,  G01N21/34

CPC classification number: G01T1/2935 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4078 ,  A61B6/466 ,  H01J47/06 ,  A61B6/4258 ,  A61B6/4291

Abstract: A fan-shaped beam of penetrating radiation, such as X-ray or .gamma.-ray radiation, is directed through a slice of the body to be analyzed to a position sensitive detector for deriving a shadowgraph of transmission or absorption of the penetrating radiation by the body. A number of such shadowgraphs are obtained for different angles of rotation of the fan-shaped beam relative to the center of the slice being analyzed. The detected fan beam shadowgraph data is reordered into shadowgraph data corresponding to sets of parallel paths of radiation through the body. The reordered parallel path shadowgraph data is then convoluted in accordance with a 3-D reconstruction method by convolution in a computer to derive a 3-D reconstructed tomograph of the body under analysis. In a preferred embodiment, the position sensitive detector comprises a multiwire detector wherein the wires are arrayed parallel to the direction of the divergent penetrating rays to be detected. A focussed grid collimator is interposed between the body and the position sensitive detector for collimating the penetrating rays to be detected. The source of penetrating radiation is preferably a monochromatic source.

Abstract translation: 诸如X射线或γ射线辐射的穿透辐射的扇形光束被引导通过要分析的身体的切片到位置敏感检测器，用于导出穿透辐射的透射或吸收的阴影图， 身体。 获得了多个这样的阴影片，用于扇形束相对于被分析的切片的中心的不同旋转角度。 将检测到的风扇光束影像数据重新排列成对应于穿过身体的平行辐射路径的阴影图像数据。 然后根据3-D重建方法通过卷积在计算机中对重新排列的平行路径阴影图数据进行卷积，得到所分析的身体的3-D重建断层摄影术。 在优选实施例中，位置敏感检测器包括多线检测器，其中电线平行于待检测的发散穿透光线的方向排列。 聚焦栅格准直仪置于身体和位置敏感检测器之间，用于准直待检测的穿透光线。 穿透辐射源优选为单色光源。