For proving that our Autoradiographs are visualizing the artificial radioactive particles released from Fukushima Daiichi Nuclear Power Plant, we’re comparing contaminated samples to non contaminated ones on the image. The results are going to be posted here.

Head of blackbass, cololabis, sea bream (comparing)



Radiation level:
Blackbass – 130cpm
Cololabis – 50cpm (background level), Sea bream – 50cpm (background level)

This blackbass is from Iitate Village, cololabis is from Hokkaido prefecture and sea bream is from Miyagi prefecture. This autoradiograph was taken simultaneously on an Imaging plate. Nothing appears on the right side of blackbass.

Measuring radiation level

Kiwis from Namie and from New Zealand


kiui nihonn nyuujira_1024pxRadiation level:Kiwis from Namie Fukushima (Left) – 80~90cpm

Kiwis from Namie are on the left and those imported from New Zealand are on the right in the image. This is comparing with autoradiograph. We can find faintly shadow in those from New Zealand by radiation from potassium 40 (K40) but we also find the great difference between those two.

16~18 μSv/h in air where the kiwis were

Measuring radiation lever

(15th Jan. 2016)

Macrophyll and Weed in Namie


20151212_Compare_Ooba_OmaruKusa_1024pxLeft : Macrophyll, Right : Weed in Namie Town (100~150cpm)

Since we published a book titled “Autoradiograph” in Japan, some of the readers wondered what would happen if vegetables or other ingredients from western Japan are taken by autoradiograph. They are concerned about whether they are taking radiation in the diet, even if it came from west. We knew that nothing appears from such ingredients but we took images to compare the contamination between something in the contaminated field and some ingredients in supermarket.

The autoradiograph above is taken simultaneously and on the same imaging plate. Macrophylls are in the left and weeds in Namie Town (100~150cpm) are in the right.

Measuring radiation level

(15th Dec. 2015)

Lentinus edode and Sarcodon aspratus


_DSC2846_1024pxLeft : Lentinus edode, Center: Sarcodon aspratus, Right : Lentinus edode from western Japan

Radiation level from left : 1140cpm, 170cpm, 50cpm (background-level)

The two kinds of mushroom from left grew in Iitate Village and the rest is sold in supermarket from western Japan. They are all dry.

Measuring radiation level

(8th Aug. 2015)

Outer Skin of Black bass in Iitate Village and Beryx Splendens


20151212_Compare_Skin_BlackBass_Kinmedai_2Left : Black bass (170cpm), Right : Beryx Splendens

Radiation level from left : 170cpm, 50cpm(background-level)

The autoradiograph above is taken simultaneously and on the same imaging plate. Outer skin of a black bass in Iitate Village is in the left and a beryx splendens is in the right.

Measuring radiation level

(17th Dec. 2015)

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