Spectral response of THM grown CdZnTe crystals
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The spectral response of several crystals grown by the Traveling Heater Method (THM) were investigated. An energy resolution of 0.98% for a Pseudo Frisch-Grid of 4 × 4 × 9 mm3 and 2.1% FWHM for a coplanar-grid of size 11 × 11 × 5 mm3 were measured using 137Cs-662 keV. In addition a 4% FWHM at 122 keV has also been measured on 20 × 20 X 5 mm3 monolithic pixellated devices. The material shows great potential toward producing large-volume detectors with spectral performance that meets the requirement for high-resolution gamma-ray spectroscopy.
Chen, H., Awadalla, S. A., Harris, F., Lu, P., Redden, R., Bindley, G., Copete, A., Hong, J., Grindlay, J., Amman, M., Lee, J. S., Luke, P., Kuvvetli, I., & Budtz-Jørgensen, C. (2008). Spectral response of THM grown CdZnTe crystals. IEEE Transactions on Nuclear Science, 55(3), 1567-1572. https://doi.org/10.1109/TNS.2008.924089