Сhupov A. Restoring of inhalation dose of radiation after ChNPP accident in 30-km zone

Radiation situation in the first days after the accident and its influence on population of 30-km zone. To investigate the mechanism of behaviour of radionuclides in after accident period. Methods of investigations are simulation of radiation situation in the first days after the accident, simulation and calculation of inhalation doses, radiometry and spectroscopy, mathematical statistic. The model of reconstruction of radiation situation in 30-km zone is proposed and inhalation dose of population irradiation lived close by ChNPP in the first days after the accident is defined. The methods of estimation of population irradiation effective inhalation doses is worked up which allows to obtaine data of population irradiation in the accident first period. Inhalation doses obtained by population of different age daily Data base is created. Research oh Chornobyl falls near ChNPP 30-km zone is carried out and falls effective period T1/2 ef - (640+/- 70) days. Cs-137 and Sb-125 migration in different soils ismade more accurate and the necessity of taking into account of Cs-137 self absorption with depth is shown. Nonradiochemical methods is elaborated wich differs from existing one because Lx-radiation is researched without destruction of samples under investigation. Sphere of utillization - radioecology and ecological safety of population.