Exposure rate constants and lead shielding values for over 1,100 radionuclides

Health Phys. 2012 Mar;102(3):271-91. doi: 10.1097/hp.0b013e318235153a.


The authors have assembled a compilation of exposure rate constants, ƒ-factors, and lead shielding thicknesses for more than 1,100 radionuclides described in ICRP Publication 107. Physical data were taken from well established reference sources for mass-energy absorption coefficients in air, attenuation coefficients, and buildup factors in lead and other variables.The data agreed favorably for the most part with those of other investigators; thus this compilation provides an up-to-date and sizeable database of these data, which are of interest to many for routine calculations. Emissions were also segregated by emitting nuclide, and decay product emissions were emitted from the calculated coefficients, thus for the first time providing for the calculation of exposure rates from arbitrary mixtures of nuclides in arbitrary equilibrium states.

MeSH terms

  • Health Physics / statistics & numerical data
  • Humans
  • Lead
  • Radiation Protection / instrumentation
  • Radiation Protection / methods
  • Radiation Protection / statistics & numerical data*
  • Radioisotopes / administration & dosage*
  • Radiometry


  • Radioisotopes
  • Lead