The energy dependence of the sensitivity for planar CdZnTe gamma-ray detectors
2013; SPIE; Volume: 8852; Linguagem: Inglês
10.1117/12.2022593
ISSN1996-756X
AutoresA.A. Zakharchenko, Anna I. Skrypnyk, М. А. Хажмурадов, A. Rybka, V.E. Kutny, P. Fochuk, Valery M. Sklyarchuk, A. E. Bolotnikov, R. B. James,
Tópico(s)Radiation Detection and Scintillator Technologies
ResumoConsiderable variations in the charge-carrier transport parameters necessitate individual calibration of CdZnTe gammaray detectors for many applications. We carried out a set of experiments wherein we determined that the main region of interest for the energy dependence of CdZnTe-detectors' sensitivity lay in the gamma-quantum energy range of 0.03- to 3-MeV. This finding was satisfactorily verified and reconstructed from our measurements of pulse-height distributions using 241 Am-, 137 Cs-, and 60Co-sources. We discuss our comparison of the quality-of-fit of the approximation formulae with our detailed calculations of the sensitivity of CdZnTe detectors via a Monte-Carlo method.
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