[en] Large-volume coaxial Si(Li) detectors are shown to have disadvantages, due to the high resistivity of silicon, in contrast to Ge(Li) detectors. Measures are recommended for the elimination of these disadvantages by the choice of material, detector design, and conditions of lithium drift. A method is described for obtaining detectors with a resolution of 2.5-6 keV for the γ-ray line of Cs-137 for a working volume of approximately 30 cm³

[en] A breakthrough in the performance of p-i-n CdTe and CdZnTe detectors is reported. The detector stability has been significantly improved, allowing their use in precise gamma and XRF applications. Detectors with energy resolution close to Si and Ge were produced operating with only -30--35 deg. C cooling (by a Peltier cooler of 15x15x10 mm size and a consumed power less than 5 W). Presently detectors with volume of up to 300 mm³ are available. In terms of photoelectric effect efficiency it corresponds to HPGe detectors with volumes of about 1.5 cm³. The possibilities of further improvement of CdTe and CdZnTe detector characteristics are discussed in this paper

[en] The method of angular distribution of annihilation photons was used to investigate the formation and annealing of radiation defects in Ge and Si irradiated with reactor neutrons. These effects were studied as a function of the type of conduction of the dopant concentration. The nature of annealing demonstrated positron annihilation at multivacancy complexes located within disordered regions