An optimized system for measurement of radon levels in buildings by spectroscopic measurement of radon progeny
An optimized system for measurement of radon levels in buildings by spectroscopic measurement of radon progeny
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DOI：
10.1088/1748-0221/6/12/c12018
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发表时间：
2011-12
影响因子：
1.3
通讯作者：
A. Frojdh;G. Thungström;C. Fröjdh;S. Petersson
中科院分区：
文献类型：
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作者：
A. Frojdh;G. Thungström;C. Fröjdh;S. Petersson
氡气，222Rn，是许多建筑物中的一个问题。氡气体本身是无害的，但衰变链中含有带电元素，如218Po和214Po离子，当吸入时，它们往往会粘在肺部。这些离子的衰变产生的阿尔法粒子会对肺部造成损害，并增加患肺癌的风险。最近建筑物中氡水平限值的降低需要新的简单有效的测量工具[1]。通过修改探测器尺寸、改变过滤器和反应室的设计，对系统进行了优化。这些变化增加了腔体内的电场，提高了检测效率。
Radon gas, 222Rn, is a problem in many buildings. The radon gas is not harmful in itself, but the decay chain contains charged elements such as 218Po, and 214Po ions which have a tendency to stick to the lungs when inhaled. Alpha particles from the decay of these ions cause damages to the lungs and increase the risk of lung cancer. The recent reduction in the limits for radon levels in buildings call for new simple and efficient measurement tools [1]. The system has been optimized through modifications of the detector size, changes to the filters and the design of the chamber. These changes increase the electric field in the chamber and the detection efficiency.