Israeli M
Health Phys. 1985 Dec;49(6):1069-83. doi: 10.1097/00004032-198512000-00003.
Deposition rates and velocities of indoor Rn progeny for both attached and unattached species are estimated from simultaneous measurements performed in 20 houses during 12 months. Fitting the values of working level ratio (the "equilibrium fraction"), the ratio between track densities of filtered and bare nuclear track detectors, section the air exchange rate, and the concentration of condensation nuclei to a theoretical model enabled us to calculate the average deposition rates for the houses in the study. This approach avoids the need to measure deposition rates on different types of surfaces in a house, and yields average values for houses with similar features (e.g. room sizes, heating, and air conditioning). Deposition rates were found to lie within about a factor of two of the average during the year, and exhibit higher values in the winter and lower values in the summer. Average deposition rates for the houses in the study were calculated to be 8 hr-1 and 1 hr-1 for unattached and attached radon daughters, respectively. These values correspond to deposition velocities of about 0.1 cm/sec and 0.015 cm/sec.
通过在12个月内对20所房屋进行同步测量，估算了附着态和非附着态室内氡子体的沉积率和沉积速度。将工作水平比（“平衡分数”）的值、过滤后的和裸露的核径迹探测器的径迹密度之比、空气交换率以及凝结核浓度代入理论模型进行拟合，使我们能够计算出研究中房屋的平均沉积率。这种方法避免了在房屋内不同类型表面上测量沉积率的需要，并得出了具有相似特征（如房间大小、供暖和空调）房屋的平均值。研究发现，沉积率在一年中约为平均值的两倍范围内，冬季值较高，夏季值较低。研究中房屋的非附着态和附着态氡子体的平均沉积率分别计算为8小时-1和1小时-1。这些值对应的沉积速度约为0.1厘米/秒和0.015厘米/秒。
