Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599, USA.
J Environ Radioact. 2012 Oct;112:165-70. doi: 10.1016/j.jenvrad.2012.01.026. Epub 2012 Feb 18.
We present measurement results of airborne fission products in Chapel Hill, NC, USA, from 62 d following the March 11, 2011, accident at the Fukushima Dai-ichi nuclear power plant. Airborne particle samples were collected daily in air filters and radio-assayed with two high-purity germanium (HPGe) detectors. The fission products (131)I and (137)Cs were measured with maximum activity concentrations of 4.2 ± 0.6 mBq/m(3) and 0.42 ± 0.07 mBq/m(3) respectively. Additional activity from (131,132)I, (134,136,137)Cs and (132)Te were measured in the same air filters using a low-background HPGe detector at the Kimballton Underground Research Facility (KURF).
我们呈现了 2011 年 3 月 11 日日本福岛第一核电站事故发生 62 天后在美国北卡罗来纳州教堂山采集的空气中的裂变产物的测量结果。通过使用两个高纯锗（HPGe）探测器，我们每天在空气过滤器中收集空气样本，并进行放射性测定。裂变产物（131）I 和（137）Cs 的最大活度浓度分别为 4.2±0.6 mBq/m³和 0.42±0.07 mBq/m³。在金伯顿地下研究设施（KURF），我们还使用低本底高纯锗探测器在同一空气过滤器中测量了（131、132）I、（134、136、137）Cs 和（132）Te 的额外活性。
