Uncooled CdTe and CdZnTe based detectors for [gamma]-radiation spectrometry

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 [([mu][tau]).sub.e] in R...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2017-03, Vol.120 (5), p.365
Main Authors: Gazizov, I.M, Smirnov, A.A, Fedorkov, V.G, Kharitonov, Yu.P, Khrunov, V.S, Zaletin, V.M
Format: Article
Language:English
Subjects:
Cadmium tellurides
Cadmium zinc tellurides
Cesium radioisotopes
Charge materials
Cooling
Crystals
Current carriers
Detection equipment
Detectors
Energy
Energy consumption
Energy distribution
Energy industry
Energy resolution
Gamma rays
Metal industry
Nuclear engineering
Nuclear power plants
Radiation
Sensors
Single crystals
Spectrometry
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Summary: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 [([mu][tau]).sub.e] in Redlen CdZnTe were 3 x [10.sup.-3] - 2 x [10.sup.-2] cm IV. It is shown that the transport characteristics [mu][tau] 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 [gamma]-ray energy range 30-662 keV using uncollimated [gamma]-ray sources [sup.133]Ba, [sup.241]Am, [sup.57]Co, and [sup.137]Cs. 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 [sup.137]Cs 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.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-017-0213-4