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EXPOSURE RATE CONSTANTS AND LEAD SHIELDING VALUES FOR OVER 1,100 RADIONUCLIDES

Smith, David S.; Stabin, Michael G.*

doi: 10.1097/HP.0b013e318235153a
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The authors have assembled a compilation of exposure rate constants, f-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.

*Department of Radiology and Radiological Sciences, Vanderbilt University, 1161 21st Avenue South, Nashville, TN 37232-2675, and RAdiation Dose Assessment Resource (RADAR) Task Group of the Society of Nuclear Medicine.

The authors declare no conflict of interest.

For correspondence contact: Michael G. Stabin, Department of Radiology and Radiological Sciences, Vanderbilt University, 1161 21st Avenue South, Nashville, TN 37232-2675, or email at michael.g.stabin@vanderbilt.edu.

(Manuscript accepted 29 August 2011)

© 2012 by the Health Physics Society