On accumulation of radionuclides and on radiation induced in wood distortions in poplar from radioactively contaminated territories

The results of measurements of accumulation of a alpha-particles and radiation induced distortions in wood samples of poplar taken from the districts of East Kazakhstan region, having an influence of Semipalatinsk and Lobnor nuclear test sites are presented. Noticeable correlation between annual rings width and accumulation of radionuclides or structure distortions in them was not revealed. Most probably the width of poplar rings to the largest degree depends on climate conditions, but not on their structural distortions. At the same time during the nuclear tests at Semipalatinsk Nuclear test site the rings in tree sawcuts were somewhat wider than in previous years