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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Revealing smuggled nuclear material covered by a legitimate radioisotope shipment using CdTe-based gamma-ray spectrometry.
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Revealing smuggled nuclear material covered by a legitimate radioisotope shipment using CdTe-based gamma-ray spectrometry.

机译:使用基于CdTe的伽马射线能谱法揭示合法放射性同位素装运所涵盖的走私核材料。

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摘要

Illicit trade of nuclear materials (NM) represents a serious challenge to radiation monitoring upon scenarios, when legitimate radioisotope shipments are used to obscure the weak radiation of NM. Planar and hemispherical Cd(Zn)Te detectors with a portable mini-multichannel analyzer were proven to be suitable, in measuring times of 10min order, for revealing the presence of low-enriched or natural U-bearing reactor fuel pellets in amounts of kg order, placed beside transport containers of lead or depleted uranium, which contain high activity 60Co (10GBq range) or 192Ir (TBq range) radioisotope sources. Such a hand-held or portable device may help authorities combating illicit trafficking of nuclear materials.
机译:当使用合法的放射性同位素来掩盖NM的微弱辐射时,核材料(NM)的非法贸易对情景下的辐射监测提出了严峻的挑战。事实证明,使用便携式微型多通道分析仪的平面和半球形Cd(Zn)Te检测器适用于10分钟数量级的测量,以揭示千克级数量的低浓或天然U轴承反应堆燃料颗粒的存在放置在含铅或贫铀的运输容器旁边,该容器包含高活性60Co(10GBq范围)或192Ir(TBq范围)放射性同位素源。这种手持式或便携式设备可以帮助当局打击核材料的非法贩运。

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