辐射防护2013，Vol.33Issue(1)：54-58,5.
220Rn子体暴露的剂量转换系数研究
The Dose Conversion Factors for Thoron Decay Products Exposure
王锋 1张磊 2郭秋菊 3王善强 3艾宪芸 2马新华 2史志兰2
作者信息
- 1. 中国人民解放军防化指挥工程学院
- 2. 防化研究院二所,北京102205
- 3. 北京大学物理学院技术物理系,北京100086
- 折叠
摘要
Abstract
The dose evaluation of 220Rn exposure in environment is one of the hottest discussed issues in the field of radiation protection. One focused point of this issue is the change of the dose conversion factor of 220Rn progeny exposure. This paper reviews the recent domestic and foreign research results related to this problem and calculates the dose conversion factor of 220Rn progeny, especially taking into count of the affect of the size distribution of attached 220Rn progeny and the unattached fraction. The results show that the dose conversion factor changes with the size distribution of attached 220Rn progeny, as it grows, first grows down then grows up. The dose conversion factor increases linearly with the unattached fraction. In typical indoor environment, the effective dose conversion factor of 220Rn progeny exposure would be 95.95 nSv·(Bq·h· m-3)-1, with a varing range of 90.60—101. 28 nSv·(Bq·h·m -3) -1.关键词
220Rn子体/剂量转换系数/未结合态份额/粒径分布Key words
220Rn progeny/ dose conversion factors/ the unattached fraction/ size distribution分类
医药卫生引用本文复制引用
王锋,张磊,郭秋菊,王善强,艾宪芸,马新华,史志兰..220Rn子体暴露的剂量转换系数研究[J].辐射防护,2013,33(1):54-58,5.
