The results of a study of the electrophysical characteristics of the detector single crystals CdZnTe and CdTe obtained from the best domestic (Institute of Rare Metal Industry, Giredmet) and foreign (Acrorad (Japan) and Redlen (Canada)) producers are presented. The values of (μτ)e in Redlen CdZnTe were 3·10–3–2·10–2 cm2/V. It is shown that the transport characteristics μτ of nonequilibrium charge carriers in domestic materials is 3–30 times lower than in the foreign samples. The spectrometric characteristics of the fabricated detectors were studied in the γ-ray energy range 30–662 keV using uncollimated γ-ray sources 133Ba, 241Am, 57Co, and 137Cs. The measured spectra of the amplitude distribution of the pulses from these sources are presented. The best energy resolution for quasi-hemispherical CdZnTe detectors in terms of the energy 662 keV 137Cs was 1.7%. The results of these investigations are of interest for monitoring nuclear materials using compact devices with high energy resolution that do not require cooling.
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References
V. M. Zaletin, “Wide-band semiconductor compounds for x- and gamma-ray detectors,” Mater. Elektron. Tekhn., No. 3, 4–16 (2010).
F. Wald and G. Entine, “Crystal growth of CdTe for γ-ray detectors,” Nucl. Instrum. Meth., 150, 13 (1978).
V. N. Merinov, A. K. Khusainov, V. V. Akimov, et al., “Cd1–x Zn x Te based sensors of ionizing radiation,” in: All-Russ. Sci. Appl. Conf. on Sensors–Systems, NIIIT, Penza (2006), pp. 47–56.
K. Hecht, “Zum Mechanismus des lichtelektrischen Primärstromes in isolierenden Kristallen,” Z. Phys., 77, 235–245 (1932).
L. L. Makovskii, N. B. Strokan, and N. I. Tisnek, “On the question of the energy resolution of semiconductor counters,” Fiz. Tekh. Poluprovod., 3, No. 7, 1097–1100 (1969).
M. Amman, P. Luke, and J. Lee, “CdZnTe material uniformity and coplanar-grid gamma-ray detector performance,” IEEE Transac. Nucl. Sci., 47, 760–767 (2000).
K. Spartiotis, R. Durrant, A. Leppanen, et al., “X- and gamma-ray imaging systems based on CdTe-CMOS detector technology,” IEEE Nucl. Sci. Symp. Conf. Record (2008), pp. 518–522.
J. Matteson, Y. Gu, R. Skelton, et al., “Charge collection studies of a high resolution CZT-based detector for PET,” ibid., pp. 503–510.
M. Amman, J. Lee, P. Luke, et al., “Evaluation of THM-grown CdZnTe material for large-volume gamma-ray detector applications,” IEEE Transac. Nucl. Sci., 56, 795–800 (2009).
K. Abbas, G. Nicilaoudf, D. Pellottiero, et al., “Gamma-spectrometry of spent nuclear fuel using a miniature CdTe detector,” Nucl. Instrum. Meth. in Phys. Res., A376, 248–253 (1996).
P. Mortreau and R. Berndt, “Determination of 235U enrichment with a large volume CZT detector,” ibid., A556, 219–227 (2006).
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V. M. Zaletin is deceased
Translated from Atomnaya Énergiya, Vol. 121, No. 5, pp. 285–290, November, 2016.
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Gazizov, I.M., Smirnov, A.A., Fedorkov, V.G. et al. Uncooled CdTe and CdZnTe Based Detectors for γ-Radiation Spectrometry. At Energy 121, 365–370 (2017). https://doi.org/10.1007/s10512-017-0213-4
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DOI: https://doi.org/10.1007/s10512-017-0213-4