Study of multi-electrodes structure in CdTe nuclear radiation detectors

We studied CdTe nuclear radiation detectors with multi-electrodes structure. The detector consists of a common cathode, while the anode has been separated into three electrodes: the central collecting anode, a guard ring electrode, and a guiding electrode. The detector was biased in such a way that the central anode collects electrons while the guiding electrode repel electrons and guide them towards the central anode. Application of the multi-electrode structure, an improvement in the detector performance both in terms of leakage current and the spectroscopy performance was obtained in comparison to the simple planar type detectors.