摘要
对衡水某土坯房居室内220 Rn浓度及其子体平衡当量浓度(EECTn)进行了累积测量和瞬时测量,通过计算得到居室内距各发射源不同距离的220 Rn平衡因子FTh。室内不同位置处累积测量和瞬时测量的FTh范围分别为0.003～0.065和0.008～0.045,平均值为0.03。结果表明,220 Rn平衡因子的空间分布具有一定规律性。
Passive method and positive measurement were used to measure 220Rn and its daughters equilibrium equivalent concentrations（EECTn）,and equilibrium factors of 220Rn for different distances from different sources were calculated based on the mea-surement.The equilibrium factors of 220Rn are 0.003-0.065 by passive measurement and 0.008-0.045 by positive measurement,respectively.The equilibrium factor of 220Rn appears a certain regular change in the spatial distribution.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第5期623-626,共4页
Atomic Energy Science and Technology
关键词
220Rn
平衡当量浓度
平衡因子
空间分布
220Rn
equilibrium equivalent concentration
equilibrium factor
spatial distribution
