Physics – Medical Physics
Scientific paper
2011-06-21
Physics
Medical Physics
9 pages, 12 figures
Scientific paper
After the earthquake and the tsunami occurred in Japan on 11th March 2011, four of the Fukushima reactors had released in air a large amount of radioactive isotopes that had been diffused all over the world. The presence of airborne 131I, 134Cs, and 137Cs in air particulate due to this accident has been detected and measured in the Low Radioactivity Laboratory operating in the Department of Environmental Sciences of the University of Milano-Bicocca. The sensitivity of the detecting apparatus is of 0.2 \mu Bq/m3 of air. Concentration and time distribution of these radionuclides were determined and some correlations with the original reactor releases were found. Radioactive contaminations ranging from a few to 400 \mu Bq/m3 for the 131I and of a few tens of \mu Bq/m3 for the 137Cs and 134Cs have been detected
Clemenza Massimiliano
Fiorini Ettore
Previtali Ezio
Sala Elena
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