Pressyanov D S, Guelev M G, Pentchev O J
Department of Atomic Physics, Faculty of Physics, Sofia University, Bulgaria.
Health Phys. 1993 May;64(5):522-7. doi: 10.1097/00004032-199305000-00009.
The dependence of the risk from inhalation of radon progeny on their disequilibrium suggests that the measurements of the time-integrated concentrations of each of the short-lived radon progeny are necessary for complete risk estimations. This paper presents a method that, in principle, allows the determination of the integrated specific volume activities in air of each of the radionuclides 218Po, 214Pb, 214Bi, 212Pb, and 212Bi. The method employs thermoluminescence detectors positioned around uniformly rotating filters. Two prototypes that are suitable for practical applications are described and mathematical expressions for data processing are given. Experiments with these "rotating filter dosimeters" were conducted in atmospheres radiologically dominated by 222Rn progeny. The comparison between the results obtained by the proposed method and those given by simultaneously conducted series of instantaneous grab-sampling measurements support the conclusion that the method works for 222Rn progeny. The method can be experimentally extended for 220Rn progeny as well as for unattached fractions.
吸入氡子体的风险对其不平衡状态的依赖性表明，为了进行完整的风险评估，有必要测量每种短寿命氡子体的时间积分浓度。本文提出了一种原则上能够测定放射性核素218Po、214Pb、214Bi、212Pb和212Bi在空气中的积分比活度的方法。该方法采用放置在均匀旋转滤器周围的热释光探测器。描述了两种适用于实际应用的原型，并给出了数据处理的数学表达式。在以222Rn子体为主导的放射环境中，使用这些“旋转滤器剂量计”进行了实验。将所提出的方法得到的结果与同时进行的一系列瞬时抓取采样测量结果进行比较，支持了该方法对222Rn子体有效的结论。该方法也可以通过实验扩展到220Rn子体以及未附着部分。
