Marcilei Aparecida GuazzelliMOREIRA, R. H.DE PAULA, A. L. C.MEDINA, N. H.2022-01-122022-01-122009-05-12GUAZZELLI, M. A.; MOREIRA, R. H.; DE PAULA, A. L. C.; MEDINA, N. H. Natural radiation from soil using gamma-ray spectrometry. AIP Conference Proceedings, v. 1139, p. 153-155, May. 2009.1551-7616https://repositorio.fei.edu.br/handle/FEI/4279We have studied the distribution of natural radioactivity in the soil of Interlagos, in São Paulo city and Billings Reservoir, in São Bernardo do Campo, São Paulo, Brazil. The main contribution of the effective radiation dose is due to the elements of the 238Th decay series, with smaller contributions from 40K and the elements of the series of 238U. The results indicate the dose in all of the studied areas is around the average international dose due to external exposure to gamma rays (0.48 mSv/yr) proceeding from natural terrestrial elements. © 2009 American Institute of Physics.Acesso RestritoArtigo de evento10.1063/1.3157799Natural radioactivity