COMPARISON OF COMPUTATIONAL PHANTOMS AND INVESTIGATION OF THE EFFECT OF BIODISTRIBUTION ON ACTIVITY ESTIMATIONS.

A comparison was made between two computational phantoms, modelled from the unified phantom UPh-08 T, for whole-body counting applications. One of these was further compared with the International Commission on Radiological Protection reference adult male computational phantom. The simulations that were performed for the comparison of all three voxel phantoms use various distributions of Co.

Characterization of strong (241)Am sources.

Gamma ray spectra of strong (241)Am sources may reveal information about the source composition as there may be other radioactive nuclides such as progeny and radioactive impurities present. In this work the possibility to use gamma spectrometry to identify inherent signatures in (241)Am sources in order to differentiate sources from each other, is investigated. The studied signatures are age, i.