论文标题
通过两种不同的方法比较建筑材料的ra质量呼气率测量
Comparison of Radon Mass Exhalation Rate Measurements from Building Materials by two Different Methods
论文作者
论文摘要
这项研究的目的是测量葡萄牙东部和东北部使用的普通花岗岩建筑材料的ra质量呼气率。测量了十二个立方形样品。其中九个没有任何涂层，三个涂有不同的材料（清漆，水线和液体有机硅）。用两种不同的技术进行了ra测量值：一种使用被动探测器，另一种使用活性检测器进行。对于被动方法，使用了CR-39固态核跟踪探测器。主动方法使用RAD7 Durridge检测器。从两种方法中获得的ra质量呼气率在分析样品的11至45 MBQ/kg/h范围内相对较低。关于涂层样品，测量值平均比没有涂层的样品低四倍。总体而言，两种方法的测量值都呈现出良好的一致性。
The aim of this study is to measure the radon mass exhalation rate from common granite building materials used in the East and Northeast part of Portugal. Twelve cubic shaped samples were measured. Nine of them without any coating and three coated with different materials (varnish,hydrorepellent and liquid silicone). The radon measurements were performed with two different techniques: one using passive detectors and other using an active detector. For the passive method CR-39 solid state nuclear track detectors were used. The active method used the RAD7 DURRIDGE detector. Radon mass exhalation rates obtained from both methods present relatively low values in the 11 to 45 mBq/kg/h range for the analyzed samples. Concerning the coated samples, the measured values are on average four times lower than the ones without coating. Overall, the measured values for both methods present a good agreement.
