Following the recent accident at the Fukushima Daiichi nuclear power plant in Japan, radioactive contamination was observed near the reactor site. As a contribution towards the understanding of the worldwide impact of the accident, we collected fallout samples in Cienfuegos, Cuba, and examined them for the presence of above normal amounts of radioactivity. Gamma ray spectra measured from these samples showed clear evidence of fission products 131I and 137Cs. However, the fallout levels measured for these isotopes (135 ± 4.78 mBq m−2 day−1 for 131I and 10.7 ± 0.38 mBq m−2 day−1for 137Cs) were very low and posed no health risk to the public. The doses received as consequence to the Fukushima fallout by the Cienfuegos population’s (0.002 mSv per year) don’t overcome the limit of dose (1 mSv per year) fixed for the public in Cuba.
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机译：在日本福岛第一核电站最近发生事故之后，在反应堆附近发现了放射性污染。为了帮助理解事故的全球影响，我们在古巴的西恩富戈斯收集了尘埃样品，并检查了样品中放射性是否超过正常水平。从这些样品测得的伽玛射线光谱清楚地表明了裂变产物 131 I和 137 Cs。但是，对于这些同位素测得的沉降水平（ 131 I为135±4.78 mBq m -2 day -1 和10.7±0.38 mBq m 137 Cs的 −2 天 −1 非常低，对公众没有健康危害。 Cienfuegos人口因福岛核辐射而收到的剂量（每年0.002 mSv）没有超过古巴公众设定的剂量极限（每年1 mSv）。
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