introduction: one of the sources of natural occurring radiation was soils. the purpose of article was to determine soil pollution by radiation absorbed dose rate, radium equivalent activity, external hazard index, annual gonad dose equivalent and annual effective dose equivalent. methods & materials: the soil samples was located in chahbahar city in blouchestan of iran, was chosen for studying ...

Problem statement: Uranium is a radiotoxic element found in trace quantities in alomost all natural accurring materials like soil, rock. Radon an inert radioactive gas whose predecessor in uranium, is emitted from soil beneath the house and from building materials. Accurate knowledge of exhalation rate plays an important role in characterization of the radon source strength in some building mat...

The process of gas generation for radium sources embedded in metal matrices (or metal capsules) is described in order to obtain the conditions of safe immobilisation of radium sources in metal matrices. For this purpose a simple model describing immobilisation of sources in a metal housing is proposed. Both helium and radon generation is considered near a radium source. Partial pressures of hel...