公开(公告)号：US10859718B1

公开(公告)日：2020-12-08

申请号：US16165315

申请日：2018-10-19

申请人： Radiation Monitoring Devices, Inc.

发明人： Vivek V. Nagarkar ,  Matthew Marshall ,  Harish Bhandari ,  Stuart Miller

IPC分类号： G01T3/06 ,  G01T3/00 ,  H01J47/12 ,  G01T1/29 ,  G01N23/09 ,  G01T1/202

摘要： Large detection area, high spatial resolution, high dynamic range and low noise neutron detectors are disclosed. Curved detectors that minimize parallax errors and boundary regions without sacrificing its intrinsic resolution or the efficiency are also disclosed.

公开(公告)号：US20200309971A1

公开(公告)日：2020-10-01

申请号：US16392059

申请日：2019-04-23

申请人： Silverside Detectors Inc.

发明人： Andrew INGLIS ,  Alison Forsyth ,  Zachary S. Hartwig ,  Philip C. Taber ,  Timothy Teal ,  Hidefumi Tomita

IPC分类号： G01T3/00 ,  H01J47/12

摘要： A fissile neutron detection system includes an ionizing thermal neutron detector arrangement including an inner peripheral shape that at least substantially surrounds a moderator region for detecting thermal neutrons that exit the moderator region but is at least generally transparent to the incident fissile neutrons. A moderator is disposed within the moderator region having lateral extents such that any given dimension that bisects the lateral extents includes a length that is greater than any thickness of the moderator arrangement transverse to the lateral extents. The moderator can include major widthwise and major lengthwise lateral extents such that any given dimension across the lengthwise and widthwise lateral extents includes a length that is greater than any thickness of the moderator arrangement transverse to the lateral extents.

公开(公告)号：US10302780B2

公开(公告)日：2019-05-28

申请号：US15039842

申请日：2015-10-16

申请人： SILVERSIDE DETECTORS INC.

发明人： Andrew Inglis ,  Zachary S. Hartwig ,  Philip C. Taber ,  Timothy Teal

IPC分类号： G01T3/00 ,  H01J47/02 ,  H01J47/12

摘要： A fissile neutron detection system includes a neutron moderator and a neutron detector disposed proximate such that a majority of the surface area of the neutron moderator is disposed proximate the neutron detector. Fissile neutrons impinge upon and enter the neutron moderator where the energy level of the fissile neutron is reduced to that of a thermal neutron. The thermal neutron may exit the moderator in any direction. Maximizing the surface area of the neutron moderator that is proximate the neutron detector beneficially improves the reliability and accuracy of the fissile neutron detection system by increasing the percentage of thermal neutrons that exit the neutron moderator and enter the neutron detector.

公开(公告)号：US10126441B1

公开(公告)日：2018-11-13

申请号：US15904834

申请日：2018-02-26

申请人： Toshiba Electron Tubes & Devices, Co., Ltd.

发明人： Noriyuki Hikida ,  Kiyofumi Ookawa ,  Kazuya Ishizawa

IPC分类号： G01T3/00 ,  G01T1/185 ,  H01J47/12

CPC分类号： G01T3/008 ,  G01T1/185 ,  H01J47/12

摘要： According to one embodiment, a neutron position detector includes a gas including a 3He gas and an additive gas. The gas has a gas composition being set so that a total of ranges of a proton and a tritium in the gas is 2.0 to 2.7 mm. The partial pressures are in an extent surrounded by a first gas composition point of the 3He gas of 5 atm and the additive gas of 1.6 atm, a second gas composition point of the 3He gas of 5 atm and the additive gas of 2.3 atm, a third gas composition point of the 3He gas of 20 atm and the additive gas of 0.6 atm, and a fourth gas composition point of the 3He gas of 20 atm and the additive gas of 1.3 atm.

公开(公告)号：US20180074217A1

公开(公告)日：2018-03-15

申请号：US15700380

申请日：2017-09-11

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： Weigang Yang ,  Yuanjing Li ,  Zhujun Zhang ,  Yulan Li

IPC分类号： G01T3/00 ,  G01T1/167 ,  H01J47/12

CPC分类号： G01T3/008 ,  G01T1/167 ,  H01J47/12

摘要： A slow neutron detection device is disclosed, comprising: a first slow neutron converter and a second slow neutron converter, and a readout electrode wire set and cathode wire sets arranged between the first slow neutron converter and the second slow neutron converter. By arranging a readout circuit between the two slow neutron converters, an electron drift distance is reduced by half without changing a dimension of the detection device, and an average over-threshold probability of a signal is increased.

公开(公告)号：US20150301203A1

公开(公告)日：2015-10-22

申请号：US14392032

申请日：2013-09-13

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH ,  CDT CASCADE DETECTOR TECHNOLOGIES GMBH ,  RUPRECHT-KARLS-UNIVERSITÄT HEIDELBERG

发明人： Peter Lennert ,  Martin Klein ,  Christian J. Schmidt ,  Werner Schweika

IPC分类号： G01T3/00 ,  H01J47/12 ,  G01T3/08

CPC分类号： G01T3/008 ,  G01T3/08 ,  H01J47/1266 ,  H01J47/1294

摘要： The invention relates to a neutron detector unit for neutrons, in particular thermal and cold neutrons, comprising a detector housing (7, 17, 27), cathode elements and a plurality of anode elements (5, 15, 25), wherein in order to form a volume detector unit the anode elements (5, 15, 25) and the cathode elements enable a three-dimensional spatial resolution for conversion events, characterised by a converter gas in the detector housing (7, 17, 27). According to the invention, in a neutron detector arrangement which includes at least one neutron detector unit the neutron detector unit (3, 13, 23) or at least one of the neutron detector units (3, 13, 23) is oriented in such a way that at least some of the anode elements (5, 15, 25) of the at least one neutron detector unit (3, 13, 23) extend at least predominantly in a longitudinal orientation parallel or almost parallel to the direction of travel of the neutrons (4) to be detected.

摘要翻译： 本发明涉及一种用于中子，特别是热和冷中子的中子检测器单元，其包括检测器壳体（7,17,27），阴极元件和多个阳极元件（5,15,25），其中为了 形成体积检测器单元，阳极元件（5,15,25）和阴极元件能够实现用于转换事件的三维空间分辨率，其特征在于检测器壳体（7,17,27）中的转换器气体。 根据本发明，在包括至少一个中子检测器单元的中子探测器装置中，中子探测器单元（3,13,23）或至少一个中子探测器单元（3,13,23）被定向在 所述至少一个中子探测器单元（3,13,23）的阳极元件（5,15,25）中的至少一些至少主要在与所述至少一个中子探测器单元（3,13,23）的行进方向平行或几乎平行的纵向方向上延伸 中子（4）被检测。

公开(公告)号：US20120104269A1

公开(公告)日：2012-05-03

申请号：US13282571

申请日：2011-10-27

申请人： CHARLES W. CLARK ,  PATRICK P. HUGHES ,  MICHAEL ALAN COPLAN ,  ALAN KEITH THOMPSON ,  ROBERT E. VEST

发明人： CHARLES W. CLARK ,  PATRICK P. HUGHES ,  MICHAEL ALAN COPLAN ,  ALAN KEITH THOMPSON ,  ROBERT E. VEST

IPC分类号： H01J47/12

CPC分类号： H01J47/12

摘要： The present invention relates to apparatus and methods for use in highly sensitive and efficient neutron detection, that includes using trigger reactions to initiate far-ultraviolet (FUV) optical emissions. In some embodiments of the present invention, a method for the detection of slow neutrons includes absorption of a slow neutron with a high neutron capture-cross-section nucleus, decay of the compound nucleus into energetic particles, creation of excimers from the energetic particles reacting with a background gas to form excimers, radiative decay of excimers resulting in emission of FUV radiation, and detection of the FUV radiation using an optical detector.

摘要翻译： 本发明涉及用于高灵敏度和有效中子检测的装置和方法，其包括使用触发反应来引发远紫外（FUV）光发射。 在本发明的一些实施例中，用于检测慢中子的方法包括吸收具有高中子捕获截面核的慢中子，将化合物核衰变为高能粒子，从能量粒子反应产生激发子 具有背景气体以形成excimers，导致FUV辐射发射的激发物的辐射衰减，以及使用光学检测器检测FUV辐射。

公开(公告)号：US20080283762A1

公开(公告)日：2008-11-20

申请号：US11803262

申请日：2007-05-14

申请人： Eric M. Weissman ,  Thomas R. Anderson ,  Lucas L. Clarke ,  Luana E. Iorio ,  Francis Johnson ,  Nathan H. Johnson ,  Greggor T. Nallo ,  James R. Williams

发明人： Eric M. Weissman ,  Thomas R. Anderson ,  Lucas L. Clarke ,  Luana E. Iorio ,  Francis Johnson ,  Nathan H. Johnson ,  Greggor T. Nallo ,  James R. Williams

IPC分类号： H01J47/12

CPC分类号： G01T3/00 ,  C22C30/00 ,  C22C45/04 ,  G01T1/18

摘要： A radiation detector is provided having an anode wire formed of an amorphous metal alloy. In one embodiment the radiation detector comprises a cathode assembly. The cathode assembly includes a main portion, a first end and a second end, where the first end opposes the second end. The cathode assembly also includes a radiation interacting material. An anode extends within the cathode assembly from the first end to the second end, and the anode is comprised of an amorphous metal alloy.

摘要翻译： 提供了具有由非晶态金属合金形成的阳极线的放射线检测器。 在一个实施例中，辐射检测器包括阴极组件。 阴极组件包括主要部分，第一端和第二端，其中第一端与第二端相对。 阴极组件还包括辐射相互作用材料。 阳极在阴极组件内从第一端延伸到第二端，阳极由非晶态金属合金构成。

公开(公告)号：US4682036A

公开(公告)日：1987-07-21

申请号：US693889

申请日：1985-01-23

申请人： Naoaki Wakayama ,  Hideshi Yamagishi ,  Shinji Fukakusa ,  Toshimasa Tomoda

发明人： Naoaki Wakayama ,  Hideshi Yamagishi ,  Shinji Fukakusa ,  Toshimasa Tomoda

IPC分类号： H01J47/12 ,  G01T3/00 ,  G01T1/185

CPC分类号： G01T3/00

摘要： A neutron ionization chamber of the gamma ray compensation type comprises a neutron-sensing ionization chamber portion having an electrode surface coated with a material for sensing neutrons, a gamma ray-sensing ionization chamber portion which has a low neutron sensitivity in comparison with the neutron sensitivity of said neutron-sensing material, a device for substracting ionization currents in the gamma ray-sensing ionization chamber portion from ionization currents in the neutron-sensing ionization chamber portion, and a coating material which is coated on an electrode surface of the gamma ray-sensing ionization chamber portion, the coating material including a material for sensing neutrons the percentage of which is less than the the percentage of the neutron sensing material of the neutron sensing ionization chamber portion.

摘要翻译： 伽马射线补偿型的中子电离室包括具有涂覆有用于感测中子的材料的电极表面的中子感测电离室部分，与中子灵敏度相比具有低中子灵敏度的伽马射线感测电离室部分 的所述中子感测材料，用于根据所述中子感测电离室部分中的电离电流来消除所述伽马射线感测电离室部分中的电离电流的装置，以及涂覆在所述伽马射线感测电离室部分的电极表面上的涂层材料， 感测电离室部分，涂层材料包括用于感测中子的材料，其百分比小于中子感测电离室部分的中子感测材料的百分比。

公开(公告)号：US4634568A

公开(公告)日：1987-01-06

申请号：US543464

申请日：1983-10-19

申请人： Lealon C. Wimpee ,  John P. Sturtz ,  John P. Neissel

发明人： Lealon C. Wimpee ,  John P. Sturtz ,  John P. Neissel

IPC分类号： G01T3/00 ,  G21C17/10 ,  G21C17/108 ,  H01J47/12 ,  G21C17/00

CPC分类号： H01J47/1233 ,  G01T3/00 ,  G21C17/108

摘要： Disclosed is a neutron detector, provided with a sealed chamber having two spaced apart electrodes, hermetically sealed in the chamber with a seal which is located in an environment of at least two decades less neutron flux than that experienced by the detector. An ionizable gas is placed within the space between the electrodes, and pressurized to a pressure above one atmosphere. A layer of a mixture of an active material and a breeding material are positioned within the chamber, the active material and breeding material being respectively U-235 and U-234, which layer has a thickness of at least 0.2 milligrams per square centimeter.

摘要翻译： 公开了一种中子探测器，其设置有具有两个间隔开的电极的密封腔室，气密密封在腔室中，该密封件位于比检测器经受的中子通量少至少二十年的环境中。 可电离气体放置在电极之间的空间内，并加压至高于一个大气压。 活性物质和育种材料的混合物层位于室内，活性物质和育种材料分别为U-235和U-234，该层的厚度为至少0.2毫克每平方厘米。