Natural Radioactivity in Spanish Soils

Authors:
  • PFP. L. Fernandez
    P. L. Fernandez
  • JSJ. Soto
    J. Soto
  • CRC. Rodenas
    C. Rodenas
  • JGJ. Gomez
    J. Gomez
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Abstract
The program of studies and surveys of natural radiation and radioactivity in Spain organized by our research group at the end of the 1980s included a 4-y national survey to determine the concentrations of natural radionuclides in soil. Results obtained from measurements of soil samples collected nationwide at >900 sampling sites are reported and discussed in this paper. Correlations between absorbed dose rates in air calculated from natural radionuclide concentrations in soil and terrestrial gamma dose rates measured experimentally outdoors are shown for the different autonomous regions of Spain. Assessment is also made of the dose to the Spanish population from outdoor exposure to terrestrial gamma rays.