Comparison of the spectrometric properties of two series of CdZnTe gamma radiation detectors

Reinhard Berndt; Patricia Mortreau; Alexander Braun

doi:10.1117/12.450756

18 December 2001 Comparison of the spectrometric properties of two series of CdZnTe gamma radiation detectors

Reinhard Berndt, Patricia Mortreau, Alexander Braun

Proceedings Volume 4507, Hard X-Ray and Gamma-Ray Detector Physics III; (2001) https://doi.org/10.1117/12.450756
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Room-temperature semiconductor detectors are used in the field of nuclear safeguards. Gamma spectra obtained with hemispherical CdZnTe detectors present distortions due to incomplete charge collection. The full-energy peaks are asymmetric and they are characterized by a long low energy tailing. In the present work, the full-energy peak of 14 detectors CZT/500 (RITEC) and 8 CZT/60 (RITEC) was described with a set of four functions. The fit parameters were determined as a function of the energy for each detector and were applied to the calculation of the efficiency. The results show that, the fit parameter values are highly variable over the individual detectors of each type. It is not possible to associate a unique set of parameters to describe the full energy peak of a group of detectors. However, the use of individual parameter sets leads to a more precise evaluation of gamma spectra of fission products in nuclear spent fuel.

Citation Download Citation

Reinhard Berndt, Patricia Mortreau, and Alexander Braun "Comparison of the spectrometric properties of two series of CdZnTe gamma radiation detectors", Proc. SPIE 4507, Hard X-Ray and Gamma-Ray Detector Physics III, (18 December 2001); https://doi.org/10.1117/12.450756

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