Abstract
In order to study the energy spectrum response of a CdZnTe detector, we firstly measured the temperature dependence and the bias dependence of the main characteristic parameters for both a quasi-hemispherical detector and a CAPture™ plus detector. Secondly, we designed a low-noise readout circuit for the CdZnTe detector and measured the noise. Finally, we evaluated the energy spectrum response of the detector to different radioactive sources at different temperatures by connecting the detector to the readout circuit. The research showed that both detectors had low leakage current and junction capacitance, as well as good stability in temperature and bias; the quasi-hemispheric detector had a smaller leakage current and junction capacitance compared to the CAPture™ plus detector; under zero input capacitor, the noise of the readout circuit was 612e, with the noise slope being 5.44e/pF; at room temperature(20 °C), the energy resolutions of the detector reached 3.84% and 1.36% for X-rays from 241Am (59.5 keV) and gamma-rays from 137Cs (662 keV), respectively; the signal-noise ratio of the output signal reached 31:1 with the rise time being 90 ns; at low temperature, the energy resolution reached 3.41% for the X-rays from 241Am (59.5 keV); the detector achieved an excellent spectrum response and was able to distinguish clearly the energy peaks of 152Eu and 226Ra.
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References
D. Goodman et al., IEEE Trans. Nucl. Sci. 64, 2531 (2017).
M. B. Tzolov, N. C. Barbi, C. T. Bowser and O. E. Healy, Microsc. Microanal. 22, 594 (2016).
C. Henager et al., J. Electron. Mater. 44, 1 (2015).
I. D. Burlakov et al., J. Commun. Technol. Electron. 61, 333 (2016).
M. D. Wilson et al., Nucl. Instrum. Methods Phys. Res. A 652, 158 (2011).
V. M. Sklyarchuk, V. A. Gnatyuk and W. Pecharapa, Nucl. Instrum. Methods Phys. Res. A 879, 101 (2018).
S. D. Sordo et al., Sensors 9, 3491 (2009).
M. Amman et al., IEEE Trans. Nucl. Sci. 56, 795 (2014).
U. Otuonye, H. W. Kimand W. D. Lu, Appl. Phys. Lett. 110, 173104 (2017).
S. Kalbitzer and W. Melzer, Nucl. Instrum. Methods 56, 301 (1967).
J. C. Kim, W. R. Kaye and Z. He, J. Korean Phys. Soc. 64, 1336 (2014).
Y. D. Li et al., At. Energy Sci. Technol. 51, 1741 (2017).
V. Radeka et al., IEEE Trans. Nucl. Sci. 35, 155 (1988).
I. Meleshenkovskii et al., EPJ Web Conf. 170, 07007 (2018).
G. Cozzi et al., IEEE Trans. Nucl. Sci. 65, 645 (2017).
H. Schrader, Appl. Radiat. Isot. 114, 202 (2016).
Acknowledgments
The authors acknowledge the financial support by the National Key R&D Program of China (Project No.2017YFC0602105), and the National Science Foundation of China (Project No. 41774147, Project No. 41774190 and Project No. 41804114).
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Li, Y., Ge, L., Sun, K. et al. Study on the Energy Spectrum Response of a CdZnTe Detector. J. Korean Phys. Soc. 76, 802–809 (2020). https://doi.org/10.3938/jkps.76.802
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DOI: https://doi.org/10.3938/jkps.76.802