Chernobyl was history's worst nuclear disaster. Now it's teaching geologists about the history of our planet ConversationEDU
Unit on 26 April 1986 was accompanied by the destruction of a reactor core and the release of solid and gaseous radioactive products. As a result of the accident, a part solid radioactive materials of the 4Unit was dispersed by the explosion. The hot particles released settled on the surface of soil hundreds kilometers from ChNPP in the Sweden [1], Germany [2,7], Poland [2,3,7], Belorussia [4] and in particular, Ukraine [5,6,8]. The size of hot particles vary from one to hundreds microns.
While particle size tends to decrease with increasing distance from the 4Unit, some relatively large particles of 100–300 micron in size were collected 12 km West of ChNPP. Phase, chemical and radionuclide compositions of hot particles are essentially heterogeneous [1–8].
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