Improvement to the semi-empirical germanium detector response model at the Compton edge

An accurate detector response model is needed for extracting the intensity profiles of distributions of γ rays incident on a detector. Current empirical detector-response models for HPGe detectors systematically vary from experimental spectra in the region of the Compton edge. In this work, we introduce new terms in the semi-empirical germanium detector response model that improves the agreement in the region of the Compton edge and broadens the model׳s applicability to a wider range of detector geometries.