introduction natural and artificial radionuclides are the main sources of human radiation exposure. these radionuclides, which are present in the environment, can enter the food chain. rice is one of the most important food components in iran. radionuclides by transferring from soil to rice and entering the human body can affect human health. materials and methods fourteen samples of different ...

the activity concentrations of 235u, 232th, 226ra, 40k and 137cs in ground and surface of drinking water resources in iranian city of arak were determined by gamma ray spectrometry with ahpge detector setup, coaxial p type and 8192 channels mca. the water samples differed in radioactivity content depending on their origin and place. in the drinking water samples from aman abad, mobarak abad, an...

The background of a High Purity Germanium (HPGe) detector measured in deep underground laboratory was investigated analytically and by Monte Carlo simulations using the GEANT4 toolkit. Contributions different sources to experimental γ-ray were determined. Namely, contribution radionuclides materials around detector, neutrons produced (α, n) reactions due presence rock concrete spontaneous fissi...