塞浦路斯城市地区室内和室外现场高分辨率γ辐射测量
Indoor and Outdoor in Situ High-Resolution Gamma Radiation Measurements in Urban Areas of Cyprus
摘要：
在塞浦路斯主要城市地区预选的共同地点进行了总共70个室外和20个室内代表性测量的现场高分辨率伽马射线光谱测定。本文测定和讨论了天然存在的Th-232、U-238系列和K-40在空气中的比活度和γ吸收剂量率。塞浦路斯人口因地面伽马辐射而受到的有效剂量率直接来自这项工作。户外获得的结果与以前通过高分辨率伽马光谱法从主岛基岩表面采集的土壤样品获得的结果非常吻合。这意味着城市地区的建筑和建筑材料不会影响外部伽马剂量率;因此，它们大多是当地产生的。最后，发现室内/室外伽马剂量比为1.4 +-0.5。
英文摘要：
In situ, high-resolution, gamma-ray spectrometry of a total number of 70 outdoor and 20 indoor representative measurements were performed in preselected, common locations of the main urban areas of Cyprus. Specific activities and gamma absorbed dose rates in air due to the naturally occurring radionuclides of Th-232 and U-238 series, and K-40 are determined and discussed. Effective dose rate to the Cyprus population due to terrestrial gamma radiation is derived directly from this work. The results obtained outdoors match very well with those derived previously by high-resolution gamma spectrometry of soil samples, which were collected from the main island bedrock surface. This implies that the construction and building materials in urban areas do not affect the external gamma dose rate; thus they are mostly of local origin. Finally, the indoor/outdoor gamma dose ratio was found to be 1.4 +- 0.5.
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