Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2012-01-19
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 8 figures
Scientific paper
We report the activity measured in rainwater samples collected in the Greater Sudbury area of eastern Canada on 3, 16, 20, and 26 April 2011. The samples were gamma-ray counted in a germanium detector and the isotopes 131I and 137Cs, produced by the fission of 235U, and 134Cs, produced by neutron capture on 133Cs, were observed at elevated levels compared to a reference sample of ice-water. These elevated activities are ascribed to the accident at the Fukushima Dai-ichi nuclear reactor complex in Japan that followed the 11 March earthquake and tsunami. The activity levels observed at no time presented health concerns.
Cleveland Bruce T.
Duncan F. A.
Lawson I. T.
Smith N. J. T.
Vázquez-Jáuregui E.
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