Dose distributions in the ICRU sphere for monoenergetic photons and electrons and for ca. 800 radionuclides : GSF-Bericht 7/93.

Dose distributions for distant point sources in air of monoenergetic photons and electrons incident on the ICRU sphere have been calculated with the Monte Carlo codes EGS4 and SPHERE. Of particular interest were the doses at 0.07 and 10 mm depths, which are for the directional dose equivalent operational quantities H'(0.07) and H'(10), the recommended depths to represent the dose equivalents. Similar quantities were previously calculated by simulating an infinite slab instead of a sphere or broad parallel beams instead of point sources. In our study, the presence of the air is taken into account. The results were summed over the discrete photon and electron energies and beta spectra to derive distributions for ca. 800 radionuclides. Dose rates from skin contamination, beta and gamma, are presented, derived by using existing data