Extension of the semiempirical germanium detector response function to low energy gamma rays

A model for the spectral response function of large volume germanium gamma-ray detectors in the range of incident gamma-ray energies from 60 keV to 6.2 MeV has been developed and applied to a 39% high purity germanium detector. Functional forms for describing the various features of the response function are based either on empirical functions or on analytical expressions of the interaction mechanisms. Improved functions are formulated to give...