title: Assessment of indoor absorbed gamma dose rate from natural radionuclides in concrete by the method of build-up factors.
abstract: The specific absorbed gamma dose rates, originating from natural radionuclides in concrete, were calculated at different positions of a detection point inside the standard room, as well as inside an example room. The specific absorbed dose rates corresponding to a wall with arbitrary dimensions and thickness were also evaluated, and appropriate fitting functions were developed, enabling dose rate calculation for most realistic rooms. In order to make calculation simpler, the expressions fitting the exposure build-up factors for whole (238)U and (232)Th radionuclide series and (40)K were derived in this work, as well as the specific absorbed dose rates from a point source in concrete. Calculated values of the specific absorbed dose rates at the centre point of the standard room for (238)U, (232)Th and (40)K are in the ranges of previously obtained data.
authors.affiliation: Department of Physics, University of Niš, PO Box 224, 18000 Niš, Serbia.
authors.forename: Vesna
authors.initials: V
authors.lastname: Manić
authors.affiliation: Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia.
authors.forename: Dragoslav
authors.initials: D
authors.lastname: Nikezic
authors.affiliation: Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia dragana@kg.ac.rs.
authors.forename: Dragana
authors.initials: D
authors.lastname: Krstic
authors.affiliation: Institute of Occupational Health, Vojislava Ilića bb, 18000 Niš, Serbia.
authors.forename: Goran
authors.initials: G
authors.lastname: Manić
mesh_terms: D000396:Air Pollutants, Radioactive / Q000009:adverse effects / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000009:adverse effects / Q000032:analysis*; D003252:Construction Materials / Q000009:adverse effects / Q000032:analysis*; D005720:Gamma Rays / Q000009:adverse effects; D006801:Humans; D011197:Potassium Radioisotopes / Q000009:adverse effects / Q000032:analysis; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000706:statistics & numerical data; D011868:Radioisotopes / Q000009:adverse effects / Q000032:analysis*; D013910:Thorium / Q000009:adverse effects / Q000032:analysis; D014501:Uranium / Q000009:adverse effects / Q000032:analysis
chemical_list: D000396:Air Pollutants, Radioactive; D011197:Potassium Radioisotopes; D011868:Radioisotopes; D014501:Uranium; D013910:Thorium