Energy resolution of large-area CdTe p-i-n detectors with charge loss correction

Earlier developed CdTe p-i-n detectors technology (energy resolution is clo se to the Ge ones) gives a possibility to solve various tasks of gamma -act ive materials control. For inspection of the materials irradiating gamma -q uanta with energies of 100-400 keV (for example, U. Pu). it is sufficient t o increase the sensitive area of detector up to 4-5 cm(2) (with the thickne ss about 2.5-3 mm). It might allow measurement of the nuclear materials cha racteristics using standard software, designed for Ge detectors. The resear ch results for large square CdTe p-i-n detectors and detection systems deve lopment will be demonstrated in this work. The factors limiting energy reso lution and other characteristics (peak-to-background ratio, shape of amplit ude distribution, charge losses) of the large CdTe detectors will be discus sed. (C) 2001 Elsevier Science B.V. All rights reserved.