A mobile radon calibration system was developed with a high-sensitivity radon detector, a movable calibration chamber, and a ²²⁶Ra solid source at the Korea Research Institute of Standards and Science (KRISS). The high-sensitivity radon detector was based on electrostatic collection mechanism. The volume of the calibration chamber was (1003.8 ± 6.0) L. The mobile radon calibration system was calibrated with ²²²Rn CRM from the radon primary system at KRISS. The sensitivities were established to be (231.8 ± 16.1) cpm/(kBq/m³) for ²¹⁸Po and (254.9 ± 17.8) cpm/(kBq/m³) for ²¹⁴Po, respectively (k = 2).

中文翻译：

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在 KRISS 开发移动氡校准系统

韩国标准与科学研究院 (KRISS)开发了一种移动式氡气校准系统，该系统具有高灵敏度氡气探测器、可移动校准室和²²⁶ Ra 固体源。高灵敏度氡探测器基于静电收集机制。校准室的体积为 (1003.8 ± 6.0) L。移动氡校准系统使用来自 KRISS 氡主系统的²²² Rn CRM进行校准。灵敏度被确定为（231.8±16.1）的cpm /（KBQ /米³），用于²¹⁸宝和（254.9±17.8）的cpm /（KBQ /米³），用于²¹⁴宝，分别为（ķ  = 2）。