公开(公告)号：US4896041A

公开(公告)日：1990-01-23

申请号：US931538

申请日：1986-11-14

Applicant: Hugo Vlasbloem ,  Simon Duinker

Inventor： Hugo Vlasbloem ,  Simon Duinker

IPC: G01T1/185 ,  G01T1/18 ,  G01T1/29 ,  H01J47/02

CPC classification number: H01J47/02 ,  G01T1/2935

Abstract: A dosimeter for ionizing radiation is of oblong shape. It comprises a gas-filled measuring chamber surrounded by a casing. THe casing is formed of two oblong frames of insulating material that are substantially similar in shape. The two frames are mounted on each other in a gas-tight manner. The anode wires are situated in the plane of separation between the frames and are secured by the frames in contact with each other. At least one of the frames is provided with a cathode over its whole length and parallel to the plane in which the anode wires are situated. Along the edge of the cathode extends a guard electrode which surrounds the cathode with a certain gap. The dosimeter is made of materials that are transparant to the ionizing radiation. It can be used particularly in slit radiography equipment in which the slitwidth can be controlled locally and independently along the length of the slit.

Abstract translation: 用于电离辐射的剂量计是长方形的。 它包括由壳体包围的充气测量室。 壳体由形状基本相似的两个绝缘材料的长方形框架形成。 两个框架以气密的方式彼此安装。 阳极线位于框架之间的分离平面中，并被框架固定在一起，彼此接触。 至少一个框架在其整个长度上设置有阴极并且平行于阳极线所在的平面。 沿阴极的边缘以一定的间隙延伸围绕阴极的保护电极。 剂量计由透过电离辐射的材料制成。 特别适用于可以沿着狭缝的长度局部且独立地控制狭缝宽度的狭缝放射线照相设备。

公开(公告)号：US4853536A

公开(公告)日：1989-08-01

申请号：US936240

申请日：1986-12-01

Applicant: John C. Dempsey ,  Payasada Kotrappa

Inventor： John C. Dempsey ,  Payasada Kotrappa

IPC: G01T1/185 ,  H01J47/02

CPC classification number: H01J47/026 ,  G01T1/185 ,  Y10S250/02

Abstract: A small enclosed chamber with an electrostatically charged electret attached to the inner chamber wall. A filtered hole in the chamber permits radon or other radioactive gas to enter by diffusion. Positive or negative ions (depending on the polarity of the electret charge) formed in the chamber air by the decay of the radioactive gas move to and collect on the electret surface by virtue of its electrostatic attraction to ions of opposite polarity. These ions accumulate and cause a measurable reduction in the surface voltage of the electret which reduction is proportional to the time integrated concentration of the radioactive gas in the chamber. The electret surface voltage of the reduction value is used to calculate the average concentration of the radioactive gas during the exposure period. The electret thickness and chamber volume can both be increased to increase the sensitivity of the invention to radioactive gases such as radon, tritium or carbon-14 dioxide or such other radioactive gases.

Abstract translation: 一个带有静电荷的驻极体的小封闭腔室，连接到内腔壁。 腔室中的过滤孔允许氡气或其他放射性气体通过扩散进入。 通过放射性气体的衰减在腔室空气中形成的正离子（或负极离子（取决于驻极体电荷的极性））由于其对相反极性的离子的静电吸引而移动并收集在驻极体表面上。 这些离子累积并导致驻极体的表面电压的可测量的降低，其减小与室中的放射性气体的时间积分浓度成比例。 减少值的驻极体表面电压用于计算曝光期间放射性气体的平均浓度。 两者都可以增加驻极体厚度和室体积，以增加本发明对放射性气体如氡，氚或二氧化碳或其他放射性气体的敏感性。

公开(公告)号：US4841152A

公开(公告)日：1989-06-20

申请号：US193526

申请日：1988-05-13

Applicant: Frank A. DiBianca

Inventor： Frank A. DiBianca

IPC: G01T1/29 ,  H01J47/02

CPC classification number: G01T1/2935 ,  H01J47/02

Abstract: A kinestatic charge detector having a chamber, which includes a front wall through which propagating energy enters and first and second electrodes disposed opposite to each other on walls substantially perpendicular to the front wall, also includes a device disposed on the front wall for maintaining the electric field generated by the electrode constant and uniform close to the front wall. The device includes a resistive wire zig-zagged across the front wall and connected between the electrodes.

Abstract translation: 一种具有腔室的运动电荷检测器，其包括传播能量进入的前壁和基本上垂直于前壁的壁上彼此相对设置的第一和第二电极，还包括设置在前壁上用于维持电 电极由电极产生的常数和均匀的靠近前壁。 该装置包括一个穿过前壁并且连接在电极之间的锯齿状电阻丝。

公开(公告)号：US4768765A

公开(公告)日：1988-09-06

申请号：US32456

申请日：1987-02-19

Applicant: Haruo Kurochi

Inventor： Haruo Kurochi

IPC: G01T1/185 ,  H01J47/02 ,  B25B1/20

CPC classification number: H01J47/02

Abstract: An electrode plate arranging jig according to the invention which allows to arrange electrode plates with high precision and facilitates the work of constructing an array of electrode plates, characterized in that a member with a plurality of grooves cut at pitches at which the electrodes are arranged has a structure of two superimposed members (11, 12) deviatable from each other in the direction in which the plurality of grooves are arranged, and has grooves (13, 14) having a width which has enough leeway compared to the thickness of the electrode plates.

Abstract translation: PCT No.PCT / JP86 / 00336 Sec。 371日期1987年2月19日 102（e）1987年2月19日PCT PCT。1986年6月27日PCT公布。 公开号WO87 / 00295 日本1987年1月15日。根据本发明的电极板配置夹具，其允许以高精度布置电极板，并且有助于构造电极板阵列的工作，其特征在于，具有以间距切割的多个槽的构件 电极配置的结构具有两个叠置部件（11,12）在布置多个槽的方向上彼此偏离的结构，并且具有宽度足够大的宽度的凹槽（13,14），其具有足够的余地 相对于电极板的厚度。

公开(公告)号：US4721857A

公开(公告)日：1988-01-26

申请号：US861463

申请日：1986-05-01

Applicant: Stanley Kronenberg

Inventor： Stanley Kronenberg

IPC: G01T1/02 ,  G01T1/142 ,  G01T1/18 ,  H01J47/02 ,  H01J47/06 ,  H01J47/08

CPC classification number: G01T1/02 ,  G01T1/142

Abstract: A wide range radiation dose rate meter for civil defense use, including a iger-Mueller tube used in a continuous counting mode and for measuring dose rates from the natural background to about 30. rads/hr., with an ion chamber arranged to measure higher dose rates up to 10,000 rads/hr. The instrument has a sample and record capability in which the selected radiation detector will have its output connected to a selected storage capacitor for a precise interval of time determined by a timing circuit and the storage capacitor will accumulate and hold a voltage proportional to the dose rate, which can be read by means of an electrometer at a later time. The instrument has a self contained hand cranked power supply and all components are selected for long shelf life.

Abstract translation: 用于民防使用的广泛辐射剂量率计，包括用于连续计数模式的Geiger-Mueller管和用于测量从天然背景到约30.rad / hr的剂量率，其中离子室布置成测量更高 剂量率高达10,000弧度/小时。 仪器具有采样和记录功能，其中所选择的辐射检测器将其输出连接到选定的存储电容器，用于由定时电路确定的精确时间间隔，并且存储电容器将累积并保持与剂量率成比例的电压 ，其可以在稍后的时间通过静电计读取。 该仪器具有自备的手动起动电源，所有组件均选择长期保质期。

公开(公告)号：US4695731A

公开(公告)日：1987-09-22

申请号：US762008

申请日：1985-08-02

Applicant: Keith J. Larkin

Inventor： Keith J. Larkin

IPC: G01T1/185 ,  G01T1/29 ,  H01J47/00 ,  H01J47/02

CPC classification number: H01J47/02 ,  H01J47/005

Abstract: To enable an ionization chamber used for measuring the intensity of a beam of ionizing radiation, for example an electron beam produced by a linear accelerator and used for radiotherapy, both to give an output signal which is independent of ambient pressure and temperature and to present a low weight of scattering material per unit area to the beam, the chamber is of flexible construction so that the volume of gas in it adapts to ambient pressure and temperature, and such that the weight of gas in the active region between the electrodes per unit area remains substantially constant. Suitably, the electrodes are conductive layers on flexible plastics sheets, an outer annular portion of one sheet providing a flexible connection between two opposed chamber wall portions which remain substantially planar and parallel; the proportional change (.DELTA.V.sub.1 /V.sub.1) in a volume bounded by the opposed wall portions and including the active region equals the proportional change (.DELTA.V.sub.2 /V.sub.2) in the remainder (V.sub.2) of the internal volume.

Abstract translation: 为了实现用于测量电离辐射束的强度的电离室，例如由线性加速器产生并用于放射治疗的电子束，可以给出独立于环境压力和温度的输出信号，并呈现 每单位面积的散射材料重量与梁的重量相差，室内结构柔软，使得其中的气体体积适应环境压力和温度，并使每单位面积电极之间的有源区气体重量 保持基本恒定。 适当地，电极是柔性塑料片上的导电层，一片的外环形部分提供两个相对的室壁部分之间的柔性连接，其保持基本平坦和平行; 由相对的壁部分限定并包括有源区域的体积中的比例变化（DELTA V1 / V1）等于内部体积的余数（V2）中的比例变化（DELTA V2 / V2）。

公开(公告)号：US4644167A

公开(公告)日：1987-02-17

申请号：US706285

申请日：1985-02-22

Applicant: Robert Sorber

Inventor： Robert Sorber

IPC: G01T1/185 ,  H01J47/02

CPC classification number: G01T1/185 ,  H01J47/02

Abstract: A beta radiation particle detector having a housing that is substantially impervious to beta radiation particles and which surroundingly encompasses an ionization chamber which is defined by electrically conductive walls is disclosed. The walls terminate in an edge which defines an opening into the ionization chamber with the opening being covered by a beta radiation pervious electrically conductive window that entraps, within the ionization chamber, a quantity of gaseous molecules which are adapted to ionize upon impact with a beta radiation particle. An electrode is disposed within the ionization chamber and has a generally shallow concave surface having a width which is substantially greater than its depth and which faces the electrically conductive window. The concave surface of the electrode terminates in a generally annular rim that is disposed substantially adjacent to the edge of the walls so that the rim is configured to substantially conform to the electrically conductive walls so as to define a beta radiation sensitive volume generally located within the ionization chamber between the beta radiation pervious electrically conductive window and the concave surface of the electrode. A battery, for establishing an electrical potential between the electrode and the electrically conductive walls and window, is adapted, upon creation of an ion within the beta radiation sensitive volume of the ionization chamber to cause an electric current to flow within a circuit between the walls/window and the electrode. A meter for detecting and measuring the flow of electric current in the circuit and displaying the amount of radiation dose rate present is included.

Abstract translation: 公开了一种β射线粒子检测器，其具有基本上不受β辐射颗粒的外壳，并且围绕由导电壁限定的电离室。 壁终止于边缘，其限定了进入电离室的开口，其中开口被β辐射可透过的导电窗覆盖，该电离室在离子化室内截留一定量的气态分子，该气体分子适于在与β 辐射粒子。 电极设置在电离室内，并且具有通常浅的凹面，其具有基本上大于其深度并面向导电窗的宽度。 电极的凹面终止于基本上邻近壁的边缘设置的大致环形的边缘，使得边缘被配置为基本上符合导电壁，以便限定一般位于该内壁内的β辐射敏感体 β辐射透过导电窗与电极凹面之间的电离室。 用于在电极和导电壁和窗口之间建立电位的电池适于在电离室的β辐射敏感体积内产生离子以使得电流在电路内在壁之间流动 /窗口和电极。 包括用于检测和测量电路中的电流并显示放射剂量率的量的仪表。

公开(公告)号：US4625117A

公开(公告)日：1986-11-25

申请号：US635738

申请日：1984-07-30

Applicant: Takayuki Hayakawa ,  Manabu Nakagawa ,  Hideji Fujii ,  Shigeru Sato

Inventor： Takayuki Hayakawa ,  Manabu Nakagawa ,  Hideji Fujii ,  Shigeru Sato

IPC: A61B6/03 ,  G01T1/185 ,  H01J47/02

CPC classification number: H01J47/02

Abstract: A multi-cell radiation detector constructed such that a first group of electrodes to which is applied high voltage and a second group of electrodes to which are connected signal leads are alternately arranged inside a vessel containing ionizable gas enclosed therein. The first group electrodes are provided with terminals to which are connected leads for introducing high voltage from the exterior, while the second group electrodes are provided with terminals to which are connected leads for leading out signal outputs to the exterior. These leads and terminals are all disposed at positions offset from traveling path of the radiation so as to reduce the volume of the space under the weak electric field behind the electrode section.

Abstract translation: 多单元辐射检测器被构造成使得施加高电压的第一组电极和连接有信号引线的第二组电极交替地布置在容纳有可电离气体的容器内。 第一组电极设置有用于从外部引入高电压的连接引线的端子，而第二组电极设置有用于将信号输出引出到外部的连接引线的端子。 这些引线和端子都设置在偏离辐射的行进路径的位置处，以便减小电极部分后面的弱电场下的空间的体积。

公开(公告)号：US4622466A

公开(公告)日：1986-11-11

申请号：US649597

申请日：1984-09-12

Applicant: Hisaaki Tamura

Inventor： Hisaaki Tamura

IPC: G01T1/185 ,  G01T7/00 ,  H01J47/00 ,  H01J47/02

CPC classification number: H01J47/002

Abstract: A pressure vessel of an X-ray detector, in which the contamination and leakage of xenon gas contained in the detector is prevented. The pressure vessel of the invention comprises a container of a curved pillar shape with a window through which the X-ray passes. The container is made of a metal, and the window faces inward of the curvature of the container. A carbon fiber-reinforced plastic sheet is fixed to the inner wall of the periphery of the window to cover the window. An elastic insulation sheet is attached to the inside of the carbon fiber-reinforced plastic sheet so as to cover the window. A metal foil is attached to the inside of the elastic insulation sheet so as to cover the window.

Abstract translation: X射线检测器的压力容器，其中防止了包含在检测器中的氙气体的污染和泄漏。 本发明的压力容器包括具有X射线通过的窗口的弯曲柱状容器。 容器由金属制成，窗口面向容器的曲率内侧。 碳纤维增强塑料片固定在窗户周边的内壁上以覆盖窗户。 在碳纤维增强塑料片的内部附着弹性绝缘片以覆盖窗户。 金属箔附着在弹性绝缘片的内部以覆盖窗户。

公开(公告)号：US4583020A

公开(公告)日：1986-04-15

申请号：US512784

申请日：1983-07-11

Applicant: Francois Cliquet ,  Pierre Boulay ,  Jean Duchene ,  Marc Merelli

Inventor： Francois Cliquet ,  Pierre Boulay ,  Jean Duchene ,  Marc Merelli

IPC: G01T1/185 ,  H01J47/02 ,  G01N27/64

CPC classification number: H01J47/02

Abstract: Ionization chamber making it possible to measure high energy gamma radiation, wherein it comprises a tight cylindrical enclosure containing an ionizable gas, and several coaxial cylindrical electrodes, which are insulated from one another, and are positioned within the enclosure and are raised to different potentials, so as to produce an electrical field in the enclosure, whereby the innermost electrode is formed by a solid cylinder, the outermost electrode is formed by a solid tube and the intermediate electrodes are formed by a perforated tube.

Abstract translation: 电离室使得可以测量高能伽马辐射，其中它包括容纳可电离气体的紧密圆柱形外壳和几个彼此绝缘的同轴圆柱形电极，并且被定位在外壳内并被升高到不同的电位， 以便在外壳中产生电场，由此最内面的电极由实心圆筒形成，最外面的电极由实心管形成，并且中间电极由多孔管形成。