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tokyo soil sample gamma spectrum showing radioactive caesium, part 02

i was sent a soil sample from the sagamihara area, west tokio, 250 kilometers away from the fukushima daiichi nuclear power plant. the 50 gram sample reads over a kilobecquerel (>1000 decays per second) of the synthetic radioactive isotopes caesium-137 (half life: 30 years) and caesium-134 (half life: 2 years).

 

more here:

www.youtube.com/watch?v=uziEgRan2G8

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Uploaded on September 3, 2011
Taken on September 3, 2011