公开(公告)号：US20040099810A1

公开(公告)日：2004-05-27

申请号：US10381045

申请日：2003-03-25

Inventor： Jean-Louis Gerstenmayer

IPC: H01J047/00

CPC classification number: H01J47/02

Abstract: Ionising radiation detector with solid radiation conversion strip and manufacturing process for this detector. This detector, that can for example be used in radiography, is formed by placing conversion means comprising the strip (10) and collection means (30) on each side of an excitable medium that interacts with charged particles resulting from the conversion of radiation (3), to generate other particles. The collection means collect these other particles and output signals representative of the radiation.

Abstract translation: 具有固体辐射转换带的电离辐射探测器和该探测器的制造工艺。 该检测器可以例如用于放射线照相，通过将包括条带（10）的转换装置和收集装置（30）放置在可激发介质的每一侧上而形成，该可激发介质与由辐射转换产生的带电粒子（3 ），以产生其他颗粒。 收集装置收集这些其他颗粒并输出代表辐射的信号。

公开(公告)号：US06703619B2

公开(公告)日：2004-03-09

申请号：US09773666

申请日：2001-02-02

Applicant: Hiroyuki Takahashi

Inventor： Hiroyuki Takahashi

IPC: G01T1185

CPC classification number: G01T1/2935 ,  H01J47/02

Abstract: A microstrip gas chamber (MSGC) comprises a gas volume, an electrically insulating substrate having a surface exposed to the gas volume. A set of alternating cathode strips and anode strips are provided on the surface of substrate, a high voltage source for establishing a potential difference between the anode and cathode strips is provide to produce an electric field sufficient for avalanche multiplication in said gas medium in a region near the anode strips. Grid electrodes are provided on the surface at each gap between the cathode strip and anode strip. The multi-grid type MSGC can offer very narrow gap between neighboring electrodes that might reduce a surface charge effect considerably. The multi-grid type MSGC may be applied to the field where both high gain and the stable operation are required.

Abstract translation: 微带气室（MSGC）包括气体体积，具有暴露于气体体积的表面的电绝缘衬底。 一组交替的阴极条和阳极条设置在基板的表面上，提供用于建立阳极和阴极条之间的电位差的高电压源，以产生足以在区域中的所述气体介质中的雪崩倍增的电场 靠近阳极条。 在阴极条和阳极条之间的每个间隙处，在表面上设置网状电极。 多格式MSGC可以在相邻电极之间提供非常窄的间隙，这可能显着降低表面电荷效应。 多电网型MSGC可以应用于需要高增益和稳定运行的场。

公开(公告)号：US06649916B2

公开(公告)日：2003-11-18

申请号：US10163437

申请日：2002-06-04

Applicant: Christopher Henry Orr ,  Craig Janson Luff ,  Thomas Dockray ,  Duncan Whittemore Macarthur

Inventor： Christopher Henry Orr ,  Craig Janson Luff ,  Thomas Dockray ,  Duncan Whittemore Macarthur

IPC: H01J4702

CPC classification number: G01T1/169 ,  G01T1/185 ,  H01J47/02

Abstract: The apparatus and method provide a technique for significantly reducing capacitance effects in detector electrodes arising due to movement of the instrument relative to the item/location being monitored in ion detection based techniques. The capacitance variations are rendered less significant by placing an electrically conducting element between the detector electrodes and the monitored location/item. Improved sensitivity and reduced noise signals arise as a result. The technique also provides apparatus and method suitable for monitoring elongate items which are unsuited to complete enclosure in one go within a chamber. The items are monitored part by part as the pass through the instrument, so increasing the range of items or locations which can be successfully monitored.

公开(公告)号：US20030178572A1

公开(公告)日：2003-09-25

申请号：US10312326

申请日：2002-12-26

Inventor： Hiroyuki Takahashi

IPC: G01T001/18

CPC classification number: H01J47/02 ,  G01T1/2935 ,  H01J47/062

Abstract: The present invention relates to a microstrip gas chamber and microstrip plate capable of reading signals from readout electrodes provided at a rear surface of the substrate in a superior manner while having a simple and compact configuration. The microstrip plate comprises an electrically insulating substrate 1, cathodes 2 and anodes 3 arranged alternately at the surface of the substrate 1, read-out electrodes 4 arranged so as to intersect the cathodes 2 and anodes 3 at the rear surface of the substrate 1, wherein a plurality of unitary regions 20 are provided at the surface of the substrate 1 and each unitary region 20 is electrically floated from the cathode via a resistance region 5.

Abstract translation: 本发明涉及一种微带气体室和微带板，其能够以简单且紧凑的结构，以优异的方式从设置在基板的后表面的读出电极读取信号。 微带板包括在基板1的表面上交替设置的电绝缘基板1，阴极2和阳极3，布置成与阴极2和基板1的后表面上的阳极3相交的读出电极4， 其中多个整体区域20设置在基板1的表面，并且每个单一区域20经由电阻区域5与阴极电浮动。

公开(公告)号：US20030108151A1

公开(公告)日：2003-06-12

申请号：US09994188

申请日：2001-11-26

Inventor： Nasreen Gazala Chopra ,  Ronald L. Moon

IPC: G01N023/04

CPC classification number: G01N23/04 ,  H01J47/02

Abstract: X-ray imaging systems are provided. A representative x-ray imaging system includes a gas detector that is configured to retain a volume of gas. The gas detector incorporates a first detection circuit corresponding to a first region of the gas and a second detection circuit corresponding to a second region of the gas. The first detection circuit is adapted to provide a first signal indicative of an intensity of x-rays radiating into the first region of the gas and the second detection circuit is adapted to provide a second signal indicative of an intensity of x-rays radiating into the second region of the gas. Methods and other systems also are provided.

Abstract translation: 提供X射线成像系统。 代表性的X射线成像系统包括气体检测器，其构造成保持一定体积的气体。 气体检测器包括对应于气体的第一区域的第一检测电路和对应于气体的第二区域的第二检测电路。 第一检测电路适于提供指示辐射到气体的第一区域中的X射线的强度的第一信号，并且第二检测电路适于提供指示辐射到第一区域中的x射线的强度的第二信号 气体的第二区域。 还提供了方法和其它系统。

公开(公告)号：US06476397B1

公开(公告)日：2002-11-05

申请号：US09550288

申请日：2000-04-14

Applicant: Tom Francke

Inventor： Tom Francke

IPC: G01T1185

CPC classification number: H01J47/02 ,  G01T1/185

Abstract: A detector for detection of ionizing radiation comprises a chamber (13) filled with an ionizable gas, and including a first (17, 19) and a second (21) electrode arrangement between which a first voltage (U1, U2) is applicable, a radiation entrance (33) arranged such that radiation (1) can enter the chamber between and substantially in parallel with the first and second electrode arrangements, for ionization of the ionizable gas, an electron avalanche amplification arrangement (15) including an avalanche cathode arrangement (25) and an avalanche anode arrangement (27), between which a second voltage (Ua) is applicable, and a read-out arrangement (29), wherein the first voltage is applicable for drifting electrons created during ionization towards the electron avalanche amplification arrangement, the second voltage is applicable for avalanche amplification of said electrons, and the read-out arrangement is arranged for detection of the electron avalanches and/or correspondingly produced ions. The invention comprises that the chamber is arranged such that radiation entering through the radiation entrance will firstly enter a first chamber section having a first distance (d1) between the first and second electrode arrangements and then enter a second chamber section having a second distance (d2) between the first and second electrode arrangements, the first (d1) and second (d2) distances being substantially different, and that the read-out arrangement is arranged such that electron avalanches, and/or correspondingly produced ions, derivable mainly from ionization in the respective chamber section are separately detectable.

Abstract translation: 用于检测电离辐射的检测器包括填充有可电离气体的腔室（13），并且包括第一电极（17,19）和第二电极（21），第一电压（U1，U2）可应用于其间， 辐射入口（33），其布置成使得辐射（1）可以进入第一和第二电极装置之间并基本上与第一和第二电极装置平行的腔室，用于电离可电离气体;电子雪崩放大装置（15），包括雪崩阴极装置 25）和雪崩阳极布置（27），其间可以应用第二电压（Ua）和读出装置（29），其中第一电压可用于漂移电离期间产生的电子朝向电子雪崩放大装置 ，第二电压适用于所述电子的雪崩放大，并且读出装置被布置用于检测电子雪崩和/或相应地产生 离子。 本发明包括：室被布置成使得通过辐射入口进入的辐射将首先进入具有第一和第二电极布置之间的第一距离（d1）的第一室部分，然后进入具有第二距离的第二室部分（d2 ）在第一和第二电极布置之间，第一（d1）和第二（d2）距离基本上不同，并且读出布置被布置成使得电子雪崩和/或相应产生的离子主要从电离 相应的室部分是可单独检测的。

公开(公告)号：US06331707B1

公开(公告)日：2001-12-18

申请号：US09307226

申请日：1999-05-07

Applicant: Christopher Henry Orr ,  Craig Janson Luff ,  Thomas Dockray ,  Duncan Whittemore Macarthur

Inventor： Christopher Henry Orr ,  Craig Janson Luff ,  Thomas Dockray ,  Duncan Whittemore Macarthur

IPC: G01T118

CPC classification number: H01J47/02 ,  G01T1/178

Abstract: The apparatus and method provide a technique for more simply measuring alpha and/or beta emissions arising from items or locations. The technique uses indirect monitoring of the emissions by detecting ions generated by the emissions, the ions being attracted electrostatically to electrodes for discharge of collection. The apparatus and method employ a chamber which is sealed around the item or location during monitoring with no air being drawn into or expelled from the chamber during the monitoring process. A simplified structure and operations arises as a result, but without impairing the efficiency and accuracy of the detection technique.

Abstract translation: 该装置和方法提供了一种用于更简单地测量由物品或位置产生的α和/或β辐射的技术。 该技术通过检测由排放物产生的离子来间接监测排放物，离子被静电吸引到电极进行收集。 该装置和方法采用在监测期间围绕物品或位置密封的室，在监测过程中没有空气被吸入或从室排出。 结果是简化的结构和操作，但是不损害检测技术的效率和精度。

公开(公告)号：US06198798B1

公开(公告)日：2001-03-06

申请号：US09150046

申请日：1998-09-09

Applicant: Fabio Sauli

Inventor： Fabio Sauli

IPC: H05G164

CPC classification number: H01J47/02

Abstract: A parallax-free X-ray imager in which a parallel X-ray beam is directed to a crystal for illuminating an entrance window is formed in a vessel filled with an ionizing gas in which primary electrons are generated. A spherical conversion volume chamber is formed by the entrance window and a first and a second parallel electrodes are adapted to generate electrical equipotential surfaces of spherical shape allowing the primary electrons to drift along corresponding radial field lines. A third electrode parallel with the second electrode is provided so as to form a gas electron multiplier structure consisting of a matrix of electric field condensing areas which are adapted to operate as an amplifier of the primary electrons through an avalanche phenomenon. A signal readout electrode is provided to allow a bi-dimensional readout in the absence of parallax readout phenomenon.

Abstract translation: 在其中产生用于产生一次电子的电离气体的容器中形成其中平行的X射线束被引导到用于照射入口窗的晶体的无视差的X射线成像仪。 通过入口窗形成球面转换体积室，并且第一和第二平行电极适于产生球形的电等势面，允许初级电子沿相应的径向场线漂移。 提供与第二电极平行的第三电极，以形成由电场聚集区域的阵列组成的气体电子倍增器结构，该电场结合区域适于通过雪崩现象作为一次电子的放大器工作。 提供信号读出电极，以便在没有视差读出现象的情况下允许二维读出。

公开(公告)号：US5434468A

公开(公告)日：1995-07-18

申请号：US104805

申请日：1993-08-10

Applicant: Alan P. Jeavons

Inventor： Alan P. Jeavons

IPC: G01T1/185 ,  G01T1/29 ,  H01J47/02 ,  H01J61/30

CPC classification number: H01J47/02 ,  G01T1/185 ,  G01T1/2942

Abstract: Apparatus and method for quantitative autoradiography analysis involving beta-ray radiation comprises a converter 2 and wire chamber 3 in association with a membrane which provides a seal for the housing in which the converter and wire chamber are accommodated, the membrane also providing a "window" for the radioactive samples.

Abstract translation: 包括β射线辐射的定量放射自显影分析的装置和方法包括与膜相关联的转换器2和线室3，所述膜为容纳转换器和线室的壳体提供密封，膜还提供“窗口” 用于放射性样品。

公开(公告)号：US5264701A

公开(公告)日：1993-11-23

申请号：US857879

申请日：1992-03-26

Applicant: Michael M. Crain

Inventor： Michael M. Crain

IPC: G01T1/00 ,  G01T1/185 ,  H01J47/02

CPC classification number: H01J47/02

Abstract: A simplified ion chamber for determining radiation from an X-ray source with the chamber having a single emitter electrode and a collector electrode of substantially the same size. A spacer element for positioning between the emitter and the collector electrodes is composed of a molded cellular plastic sheet with open areas molded in the sheet for alignment with ion collecting areas of the collector electrode and the open areas being formed with tapered walls. The spacer element also has pathways formed by higher density areas corresponding to conductive pathways of the collector electrode.