放射線犯罪 Many Radiation Crimes are being done in Japan (4-2)
the crimes by using radiation in Japan. The video image that gamma rays were measured with ALOKA PDR-101 at Okayama university Shikata campus in Japan is shown. PDR-101 is a Scintillation survey meter for gamma-ray. Nromality value(background) is 0.058 and a unit is μSv/h. When the measured value exceeds 19.99,the overrange mark appears on the upper left of the display. The sound indicates the number of gamma rays. Many Japanese products include neutron radiation sources and attack the …
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