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 close to the Ge ones) gives a possibility to solve various tasks of γ-active materials control. For inspection of the materials irradiating γ-quanta with energies of 100-400 keV (for example, U, Pu), it is sufficient to increase the sensitive area of detector up to 4-5 cm ² (with the thickness about 2.5-3 mm). It might allow measurement of the nuclear materials characteristics using standard software, designed for Ge detectors. The research results for large square CdTe p-i-n detectors and detection systems development will be demonstrated in this work. The factors limiting energy resolution and other characteristics (peak-to-background ratio, shape of amplitude distribution, charge losses) of the large CdTe detectors will be discussed.