Kessler P, Camp A, Dombrowski H, Neumaier S, Röttger A, Vargas A
Dept. 6 Ionizing Radiation Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
Institute of Energy Technologies (INTE), Universitat Politècnica de Catalunya, Diagonal 647, E-08028 Barcelona, Spain.
Radiat Prot Dosimetry. 2017 Dec 1;177(4):407-414. doi: 10.1093/rpd/ncx059.
The responses of electronic dose rate meters were investigated in a large volume radon chamber at PTB in a wide range of radon activity concentrations. The measurements were conducted under controlled laboratory conditions and measured dose rate data are compared with Monte-Carlo simulations. Consequences concerning environmental monitoring are described. A further result is that the direct measurement of the dose rates produced by radon progeny in air is hardly possible in radon atmospheres with high activity concentrations, because the major contribution of measured dose rates is produced by radon progeny on the housing of the dose rate instruments. The latter effect largely depends on the ability of surfaces to absorb radon progeny. The Monte-Carlo simulations revealed quantitative results on the height of the single contributions to the total dose rate measured in the radon chamber. When environmental dose rate measurements are performed, the plate-out on detectors can be neglected.
在德国物理技术研究院（PTB）的一个大型氡气室内，在很宽的氡活度浓度范围内研究了电子剂量率仪的响应。测量是在受控的实验室条件下进行的，并将测量得到的剂量率数据与蒙特卡罗模拟结果进行了比较。描述了与环境监测相关的结果。另一个结果是，在高活度浓度的氡气环境中，几乎不可能直接测量空气中氡子体产生的剂量率，因为测量到的剂量率的主要贡献是由剂量率仪器外壳上的氡子体产生的。后一种效应在很大程度上取决于表面吸收氡子体的能力。蒙特卡罗模拟给出了氡气室内测量的总剂量率中各单一贡献量的定量结果。当进行环境剂量率测量时，探测器上的沉积可以忽略不计。
