Radioactive noble-gas monitoring is necessary in nuclear facilities. A NaI(Tl)-based radioactive noble-gas monitoring system was developed. In order to increase the amount of air to be measured, the sample vessel of this system was larger than that of other systems, and was pressurized to about 5 × 10⁵ Pa. In a laboratory experiment, technical ways to reduce the memory effect were investigated. In field tests, a method of spectra analysis was established and calibration coefficients and minimum detectable concentrations of ¹³³Xe, ¹³⁵Xe and ⁴¹Ar were calculated. Finally, detection ability was compared with other online monitoring systems.

中文翻译：

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基于NaI（Tl）的放射性惰性气体监测系统，用于辐射监测。

在核设施中必须进行放射性惰性气体监测。开发了基于NaI（Tl）的放射性稀有气体监测系统。为了增加要测量的空气量，该系统的样品容器比其他系统大，并被加压至约5×10 ⁵  Pa。在实验室实验中，降低存储效果的技术方法是调查。在现场测试中，建立了一种光谱分析方法，并计算了校准系数和最低可检测浓度¹³³ Xe，¹³⁵ Xe和⁴¹ Ar。最后，将检测能力与其他在线监视系统进行了比较。