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首页> 外文会议>INMM annual meeting >Tracking of Fissile Material with Neutron Detector Systems
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Tracking of Fissile Material with Neutron Detector Systems

机译：用中子探测器系统追踪易裂变物质

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In the context of current nuclear threats efficient means of locating and analyzing nuclear or radioactive material are extremely important. Portable systems for in-situ detection have surpassed lab systems in importance because of the necessity of investigating critical spots such as airports, train stations, stadiums, and facilities likely to draw the attention of terrorists or other criminals. A considerable number of portable gamma detection systems of high efficiency have been available for quite some time. In contrast, portable neutron detection devices with high efficiency for in-situ detection are still rare. Most recently, Ametek/ORTEC has provided the portable and battery-operated neutron detection system “Fission Meter” consisting of a detection unit with 30~3He tubes and a pocket PC as control unit. The system’s output is meant to enable the user to distinguish between fissile and industrial material via detection of coincident neutrons. This way the location and characterization of nuclear or radioactive material in-situ is possible. The system was thoroughly tested at Fraunhofer-INT both at the lab and outdoors with neutron sources whose probability of emitting coincident neutrons varied considerably.
机译：在当前核威胁的背景下，有效的定位和分析核材料或放射性物质的手段极为重要。由于必须调查关键地点，例如机场，火车站，体育场和可能引起恐怖分子或其他罪犯注意的设施，因此用于现场检测的便携式系统已经超过了实验室系统的重要性。相当长一段时间以来，已经有大量的高效便携式伽马探测系统可用。相反，具有高效率的用于原位检测的便携式中子检测装置仍然很少。最近，Ametek / ORTEC提供了便携式电池供电的中子探测系统“裂变仪”，它由一个带有30〜3He管的探测单元和一个掌上PC作为控制单元组成。该系统的输出旨在使用户能够通过检测中子重合来区分裂变材料和工业材料。这样，就可以对核材料或放射性材料进行原位定位和表征。该系统已在Fraunhofer-INT实验室和室外用中子源进行了彻底测试，中子源发射重合中子的可能性差异很大。

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