Measured spatial dependence of the full energy peak efficiency for point so
urces in the region of photon energies from 60 to 1115 keV was analyzed usi
ng the GEANT system. A systematic iteration procedure was developed for the
fine geometric modeling of the HPGe detector structure. It revealed the de
tails of the bulletized crystal edge, the surface dead layers structure, th
e core shape and its surrounding inactive layer. (C) 1999 Elsevier Science
B.V. All rights reserved.