[en] The method of measuring proper resolution of organic scintillators, based on principles applied in detectors with inorganic scintillators, is described. The measurement of photomultiplier and detector contributions to the apparatus resolution is performed both for scintillators based on NaI(Tl) with a photopeak, and for scintillators based on polysterine of the standard composition with a Compton spectrum only. The method for detector on the base of potysterine (the cytinder with the height and diameter 150 mm) the surface of which is painted with white diffusion reflecting paint gives the value of proper resolution 8.63% at the static error 0.45%

[en] Dependence of spatial resolution of positron sensitive detectors with scintillators of elongated rectangular CsI(Na) monocrystals on the crystal depth, quantity of crystal surface treatment,a reflector type and energy of γ-quantum detected, is discussed. Among rectangular crystals used in detectors the crystals with thin dull surfaces and a white reflector possess the best spatial resolution

[en] Results of spectrometric and background investigations into plastic scintillators (PS) on the basis of polystyrene and polymethylmetacrylate are presented. Analysis of the effects of reflection conditions on the PS surface on resolution is given, the proper resolution functional dependences revealed are presented. Experimental results are compared to the calculated ones, obtained using mathematical modelling methods. PS background characteristics are determined at E_γ=0.1-3.0 MeV under passive protection conditions. The presense of uranium-radium and thorium series element radionuclide background radiation in PS is shown. At E_γ>1 MeV the proper PS emission is lower than in NaI(Tl)-base detectors