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New type of large and highly radioactive particles found in Japan

New type of fallout from Fukushima Daiichi found a decade after nuclear disaster, Physics World,15 Mar 2021New, large and highly radioactive particles have been identified from among the fallout of the 2011 Fukushima Daiichi nuclear disaster in Japan. An international team of researchers has characterized the particles using nuclear forensic techniques and their results shine further light on the nature of the accident while helping to inform clean-up and decommissioning efforts………… Recent studies have revealed that the fall-out from reactor unit 1 also included larger caesium-bearing particles, each greater than 300 micron in diameter, which have higher levels of activity in the order of 105 Bq per particle. These particles were found to have been deposited in a narrow zone stretching around 8 km north-northwest from the reactor site.

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