Energy spectrum improvement for CdZnTe semiconductor detector based on euclidian distance with digital-analog hybrid signal processing system

The application of a 'digital-analog hybrid signal processing system' combi ned with a Euclidian distance method is presented. The proposed method is u sed to improve gamma-ray energy spectrum characteristics of a CdZnTe semico nductor detector. A digital and an analog system are simultaneously applied to the detector output after passing through a preamplifier, where the dig ital system digitizes the signal pulse shape for the Euclidian distance det ermination, while the analog system measures the signal pulse height with a conventional analog method. In this paper, the digital and the analog data are combined to improve the energy spectrum characteristics; giving the in crease of the photopeak area, the peak-to-valley ratio, and the photopeak s harpness.