Self-attenuation correction factors for bioindicators measured by γγ spectrometry for energies <100keV

The mass attenuation coefficients for a number of marine and terrestrial bioindicators were measured using γγ spectrometry for energies between 22 and 80 keV.These values were then used to find the correction factor k for the apparent radioactivity. The experimental results were compared with a Monte Carlo simulation performed using PENELOPE in order to evaluate the reliability of the simplified calculation and to determine the correction factors.