Abstract Radon, the heaviest among noble gases in periodic table of element is a radioactive nuclide that naturally available rocks, soil and water. It has become subject many research efforts recent years due to its leading role causing cancer. In this study, total 68 groundwater samples were collected assayed using alpha spectrometry with RAD7 radon detector RAD-H 2 O accessories manufactured...

background: radon concentration was measured in 50 drinking water samples in mashhad - iran. b the tap water used for drinking and other household usages can increase the indoor radon level. drinking water samples were collected from various places and supplies of public water used in mashhad. then radon concentration has been measured by portable radon gas surveyor silena (prassi) system. resu...

introduction natural and artificial radionuclides are the main sources of human radiation exposure, which enter the food chain from the environment. radionuclides can affect human health by transferring from soil to plants and entering the human body. in this research study, we aimed to determine the activity concentrations of radionuclides and calculate the average annual committed effective d...

introduction cr-39 detectors are widely used for radon and progeny measurement in the air. in this paper, using the monte carlo simulation, the possibility of using the cr-39 for direct measurement of radon and progeny in water is investigated. materials and methods assuming the random position and angle of alpha particle emitted by radon and progeny, alpha energy and angular spectrum that arri...

The use of nuclear medicine imaging and CT has grown dramatically over the last several decades. In the Unites States, the annual number of nuclear medicine procedures increased 3-fold (from 7 to 20 million) and the annual number of CT procedures 20fold (from 3 to 60 million) between 1985 and 2005 (1). As a result of this increased medical exposure of the population, the average (i.e., per-capi...