公开(公告)号：US06563898B1

公开(公告)日：2003-05-13

申请号：US09409334

申请日：1999-09-30

申请人： George Vourvopoulos ,  Sandor Sudar

发明人： George Vourvopoulos ,  Sandor Sudar

IPC分类号： G21G106

CPC分类号： G21K5/04

摘要： The present invention relates to a method and portable apparatus which is used to detect substances, such as explosives and drugs, by neutron irradiation. The apparatus has a portable neutron generating probe and corresponding controllers and data collection computers. The probe emits neutrons in order to interrogate an object. The probe also contains gamma ray detectors for the collection of gamma rays from fast neutron, thermal neutron and neutron activation reactions. Data collected from these detectors is sent to the computer for data de-convolution then object identification in order to determine whether the object being interrogated contains explosives or illicit contraband.

摘要翻译： 本发明涉及一种用于通过中子照射来检测爆炸物和药物等物质的方法和便携式装置。 该装置具有便携式中子产生探针和相应的控制器和数据采集计算机。 探针发射中子以询问物体。 该探头还包含伽马射线探测器，用于收集来自快中子，热中子和中子活化反应的伽马射线。 从这些检测器收集的数据被发送到计算机进行数据去卷积，然后被对象识别，以便确定被询问的对象是否包含爆炸物或非法违禁品。

公开(公告)号：US20120168635A1

公开(公告)日：2012-07-05

申请号：US13423165

申请日：2012-03-16

申请人： George Vourvopoulos ,  Daniel T. Holslin ,  Juan J. Martinez

发明人： George Vourvopoulos ,  Daniel T. Holslin ,  Juan J. Martinez

IPC分类号： G01T1/00

CPC分类号： G01T1/167 ,  G01T3/00 ,  G01V5/0008 ,  G01V5/0069

摘要： An interrogation component is controllable between three detection/timing modes: neutron generator OFF for predetermined amount of time (Mode 1), neutron generator pulsing at 5-10 kHz/2-10 microseconds (Mode 2), and neutron generator pulsing at 200-400 Hz/25-200 microseconds (Mode 3). Utilizing the interrogation component in the three detection/timing modes to inspect a target facilitates data collection in both passive and active modes for both passive and stimulated emissions of gamma and neutron radiation.

摘要翻译： 询问分量可在三种检测/定时模式之间进行控制：中子发生器关闭预定时间量（模式1），中频发生器脉冲在5-10千赫/ 2-10微秒（模式2）和中子发生器脉冲在200- 400Hz / 25-200微秒（模式3）。 利用三个检测/定时模式中的询问分量来检查目标，有助于无源和有源模式的数据采集，用于伽马和中子辐射的被动和受激发射。

公开(公告)号：US06438189B1

公开(公告)日：2002-08-20

申请号：US09273428

申请日：1999-03-19

申请人： George Vourvopoulos

发明人： George Vourvopoulos

IPC分类号： G21G106

CPC分类号： G01N23/204 ,  G01N23/09 ,  G01N23/222

摘要： An on-line material analyzer which utilizes pulsed neutron generation in order to determine the composition of material flowing through the apparatus. The on-line elemental material analyzer is based on a pulsed neutron generator. The elements in the material interact with the fast and thermal neutrons produced from the pulsed generator. Spectra of gamma-rays produced from fast neutrons interacting with elements of the material are analyzed and stored separately from spectra produced from thermal neutron reactions. Measurements of neutron activation takes place separately from the above reactions and at a distance from the neutron generator. A primary passageway allows the material to flow through at a constant rate of speed and operators to provide data corresponding to fast and thermal neutron reactions. A secondary passageway meters the material to allow for neutron activation analysis. The apparatus also has the capability to determine the density of the flowed material. Finally, the apparatus continually utilizes a neutron detector in order to normalize the yield of the gamma ray detectors and thereby automatically calibrates and adjusts the spectra data for fluctuations in neutron generation.

摘要翻译： 一种在线材料分析仪，其利用脉冲中子生成来确定流过该装置的材料的组成。 在线元素分析仪基于脉冲中子发生器。 材料中的元素与从脉冲发生器产生的快中子和热中子相互作用。 从与材料元素相互作用的快中子产生的γ射线的光谱与热中子反应产生的光谱分开存储。 中子活化的测量与上述反应分开发生，并与中子发生器有一定距离。 主通道允许材料以恒定的速度流过，并且操作者提供对应于快速和热中子反应的数据。 二次通道测量材料以允许中子活化分析。 该装置还具有确定流动材料的密度的能力。 最后，设备连续地利用中子检测器来归一化伽马射线检测器的产量，从而自动校准和调整中子产生波动的光谱数据。

公开(公告)号：US5982838A

公开(公告)日：1999-11-09

申请号：US878938

申请日：1997-06-19

申请人： George Vourvopoulos

发明人： George Vourvopoulos

IPC分类号： G21K5/04 ,  G21G1/06

CPC分类号： G21K5/04

摘要： The present invention relates to a method and portable apparatus which is used to detect substances, such as explosives and drugs, by neutron irradiation. The apparatus has a portable neutron generating probe and corresponding controllers and data collection computers. The probe emits neutrons in order to interrogate an object. The probe also contains gamma ray detectors for the collection of gamma rays from fast neutron, thermal neutron and neutron activation reactions. Data collected from these detectors is sent to the computer for data de-convolution then object identification in order to determine whether the object being interrogated contains explosives or illicit contraband.