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24 October 2012Transport properties and spectrometric performances of CdZnTe gamma-ray detectors
We investigated the influence of the ratio of the electron and hole mobility-lifetime products, (μτ)e,h and (μτ)e/(μτ)h, on
the resolution of CdZnTe planar radiation detectors via Monte-Carlo simulations. Preliminary results show that this ratio
exercises a larger effect than that of any other parameter on the detector’s peak-to-valley ratio and resolution. We
determined the range of values of the ratio (μt)e/(μτ)h where the fast degeneration of the photopeak in CdZnTe detectors
takes place at a gamma-ray energy 661.7 keV (137Cs). We offer an explanation, based on the results of some of our
experimental data, on the spectrometric performance of CdZnTe detectors.
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Alexandr A. Zakharchenko, Alexandr V Rybka, Vladimir E. Kutny, Anna I. Skrypnyk, Manap A. Khazhmuradov, Petro M. Fochuk, Aleksey E. Bolotnikov, Ralph B. James, "Transport properties and spectrometric performances of CdZnTe gamma-ray detectors," Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 85071I (24 October 2012);