Doses of the whole body irradiation in Belarus as a result of the Chernobyl accident

An assessment of the collective and mean individual doses of the whole body irradiation as a result of the Chernobyl accident for children, adults and total population of Belarus are described in the present report. The assessment was carried out on the basis of data on the surface contamination of Belarus and empirical data on contribution of internal exposure to the total irradiation of the whole body. It was found that in case the mixed population of Belarus collective and individual doses achieve some plateaus after 1990. The mean value of the collective dose of the mixed population in the period 1986-2004 is about 2.3·10⁴ person-Sv. The mean individual dose of the whole body irradiation of the Belarusian population in this period of time is about 2.3 mSv. In case of the childhood population the whole body irradiation doses decrease since 1990. As a result of this decrease, collective and population doses of children of Belarus decrease to some fractions of background irradiation doses at 2004. The different temporal patterns of the whole body irradiation of different Belarusian subpopulations are determined by demographic factors such as birth, achieving of a definite age by children, death and external and internal migration. (author)