Electron Trapping Variations in Single-Crystal Pixelated HgI2 Gamma-Ray Spectrometers
نویسنده
چکیده
The characteristics of thick ( 6 mm) HgI 2 room-temperature gamma-ray detectors having 4 small pixel anodes are investigated. Spectra for the different anodes (overall and for individual interaction depths) are presented. The mu–tau product for electrons was measured to study the variations of electron transport within a single HgI 2 crystal. By using the single polarity charge sensing with depth sensing, the was estimated to vary from 9 10 4 cm V to 7 10 3 cm V. Individual pixels have the ability to produce spectra with resolutions less than 3% at 662 keV. Some effects of electron detrapping and hole transport are also discussed.
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