Experiment validation of the high stability of long-term transmitted gamma photon counting of a new CdZnTe semiconductor detector and its preliminary applications

Purpose To develop a detector system with high stability in counting the detection of transmitted gamma photons, which can be applied in the area of non-destructive testing. Method We used the cadmium zinc telluride (CZT) detector with single-polarity electrodes to substitute the traditional scintillator detector and front-end read-out electronics based on our self-designed low-noise charge-sensitive amplifier. Results and conclusion The energy resolution of 662 keV from 137 Cs radioactive source was improved to 1.9