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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 >Intercomparison experiments of systems for the measurement of xenon radionuclides in the atmosphere.
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Intercomparison experiments of systems for the measurement of xenon radionuclides in the atmosphere.

机译：大气中氙放射性核素测量系统的比对实验。

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摘要

Radioactive xenon monitoring is one of the main technologies used for the detection of underground nuclear explosions. Precise and reliable measurements of (131m)Xe, (133g)Xe, (133m)Xe, and (135g)Xe are required as part of the International Monitoring System for compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT). For the first time, simultaneous testing of four highly sensitive and automated fieldable radioxenon measurement systems has been performed and compared to established laboratory techniques. In addition to an intercomparison of radioxenon monitoring equipment of different design, this paper also presents a set of more than 2000 measurements of activity concentrations of radioactive xenon made in the city of Freiburg, Germany in 2000. The intercomparison experiment showed, that the results from the newly developed systems agree with each other and the equipment fulfills the fundamental requirements for their use in the verification regime of the CTBT. For 24-h measurements, concentrations as low as 0.1mBqm(-3) were measured for atmospheric samples ranging in size from 10 to 80m(3). The (133)Xe activity concentrations detected in the ambient air ranged from below 1mBqm(-3) to above 100mBqm(-3).
机译：放射性氙监测是用于探测地下核爆炸的主要技术之一。作为符合《全面禁止核试验条约》（CTBT）的国际监测系统的一部分，需要对（131m）Xe，（133g）Xe，（133m）Xe和（135g）Xe进行精确而可靠的测量。首次对四个高度灵敏且自动化的现场放射性氙测量系统进行了同时测试，并将其与已建立的实验室技术进行了比较。除了对不同设计的放射性氙监测设备进行比对之外，本文还介绍了2000年在德国弗赖堡市进行的2000多次放射性氙活度测量。对比实验表明，结果来自新开发的系统彼此同意，并且设备满足在《全面禁试条约》的核查制度中使用这些设备的基本要求。对于24小时的测量，对于大小范围从10到80m（3）的大气样品，测量的浓度低至0.1mBqm（-3）。在环境空气中检测到的（133）Xe活性浓度范围从低于1mBqm（-3）到高于100mBqm（-3）。

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