PARAMETRIC NORMALIZATION FOR FULL-ENERGY PEAK COUNT RATES OBTAINED ATDIFFERENT GEOMETRIES

The ''Effective Interaction Depth (EID)'' law has been systematically studied and applied to parametric normalization for peak count rates o btained at different source-detector distances (S-D). The errors cause d by EID normalization are less than 4% over the full range of S-D(fro m infinity to several mm) for true coincidence-free gamma-rays. Parame tric corrections for the true coincidence (summing) effect are also es tablished, based on simplified decay schemes and P/T ratio determinati ons. The total response of Ge detector for single-energy gamma-rays (T ) is clearly defined with scattering contributions from surroundings i ncluded. Errors from summing effect corrections are also less than 4%. The combined EID normalization and summing effect corrections give an error no greater than 5.7% for the worst situations (several mm S-D a nd cascade-crossover decay scheme), acceptable for most practical K0 N AA.