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Ryzhikov, V.,Starzhinskiy, N. The Korean Association for Radiation Protection 2005 방사선방어학회지 Vol.30 No.2
The authors submit the data concerning the methods of obtaining semiconductor scintillators on the basis of the zinc chalcogenide crystal doped with impurities (Te, Cd, O, $Me^{III}-metals$ Al, In, etc.). Characteristics of such crystals and mechanisms for the semiconductor scintillator luminescence are described as well. The scintillator luminescence spectra maximums are located within the range 450-640nm, which depends on the method of preparing the scintillator. The luminescence decay time ranges within $0.5-10{\mu}s\;and\;30-150{\mu}s$. The afterglow level is less than 0.01% after $10-20{\mu}s$, and the radiation stability is ${\geq}5{\cdot}10^8$ rad. Thermostability of the output characteristics of new semiconductor scintillators on the basis of zinc selenide is prescribed by thermodynamic stability of the principal associative radiative recombination centers that come into existence due to the crystal lattice inherent imperfections. Certain application fields of the new scintillators are examined taking into account their particular qualities.
Formation of the Electron Spectrum of ZnSe-Based Scintillators under Annealing in Zinc Vapor
김용균,W. G. Lee,김종경,K Katrunov,L Gal’chinetskii,N. Starzhinskiy,V. Ryzhikov 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The effects of an aftergrowth annealing of ZnSe(IVD) scintillators of two types in a Zn vapor have been studied by using a complex optical investigation. As a result of such an annealing, there arises an absorption band with a maximum at E = 2.35 eV. The results of the annealing in zinc indicate that the luminescence peak at 625 nm induced by a photoexcitation within the absortion band and an absorption on the free charge carriers in the IR spectral range are inherent in both types of crystals. The carrier concentration can be calculated up to values on the order of 2 × 1016 cm.3.3; krf
Particularities of ZnSe-Based Scintillators for a Spectrometry of Charged Particles and Gamma Quanta
이우교,김용균,김종경,서효진,K Katrunov,N Starzhinskiy,O Zelenskaya,O Vyagin,V Ryzhikov 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.I
The spectrometric characteristics of zinc-selenide-based scintillators under alpha, beta, andgamma excitations have been investigated. The optimal conditions of signal collection for energyresolution measurements have been determined. The resolution of ZnSe(O)-Si-PD (PD =photodiode) for alpha particles (239Pu, E = 5.15 MeV) is 3.1 %; for the beta particles (207Bi, E= 976 keV), it is 3.7 %; and for gamma quanta (137Cs, E = 662 keV), it is 6.3 %. High lightoutput, satisfactory energy resolution, and an /ratio which close to one allow for application ofZnSe-based scintillators for alpha particle, beta particle, and gamma quanta identification.