Fronka A, Moucka L, Jerábek M
National Radiation Protection Institute, Bartoskova 28, 140 00 Praha 4, Czech Republic.
Radiat Prot Dosimetry. 2008;130(1):56-9. doi: 10.1093/rpd/ncn103. Epub 2008 Apr 11.
The continual soil-gas radon concentration measurements are absolutely crucial for a reliable assessment of radon entry characteristics into the indoor building environment. For this purpose, a new detection system (a continuous monitor RM-3) was developed and tested. The detection principle of the monitoring device is based on an airflow ionisation chamber operating in a current mode. A comprehensive series of testing and calibration experiments have been carried out in a laboratory environment. An output signal of the device caused by the radon concentration in a sensitive detection volume significantly depends on a detector ventilation rate, the gas flow rate through the ionisation chamber. A set of calibration experiments was accomplished with the artificial radon source application and close circuit experimental arrangements. The system detection properties including applied experimental conditions and key results of pilot in situ measurements are reported in detail.
持续进行土壤气体氡浓度测量对于可靠评估氡进入室内建筑环境的特性绝对至关重要。为此，开发并测试了一种新的检测系统（连续监测仪RM - 3）。该监测装置的检测原理基于以电流模式运行的气流电离室。在实验室环境中进行了一系列全面的测试和校准实验。敏感检测体积内由氡浓度引起的装置输出信号显著取决于探测器通风率，即通过电离室的气体流速。通过应用人工氡源和闭路实验装置完成了一组校准实验。详细报告了系统检测特性，包括应用的实验条件和现场初步测量的关键结果。
