Parametric Normalization for Full-Energy Peak Efficiency of HPGe γ-ray Spectra at Different Counting Positions

The application of effective interaction depth (EID) principle for parametric normalization of full energy peak efficiencies at different counting positions, originally for quasi-point sources, was extended to bulky sources (within 30 mm×40 mm) with arbitrary matrices. It is also proved that the EID function for quasi-point source can be universally used for cylindrical bulky sources with the geometric center as effective point source. In addition, the EID principle was theoretically verified by MCNP calculations.