124 research outputs found
Low-temperature creation of Frenkel defects via hot electron-hole recombination in highly pure NaCl single crystals
No full textThe creation spectrum of stable F centres (being part of F-H pairs of Frenkel defects) by synchrotron radiation of 7–40 eV has been measured for highly pure NaCl single crystals at 12 K using a highly sensitive luminescent method. It is shown that the efficiency of F centre creation in a closely packed NaCl is low at the decay of anion or cation excitons (7.8–8.4 and 33.4 eV, respectively) or at the recombination of relaxed conduction electrons and valence holes. Only the recombination of nonrelaxed (hot) electrons with holes provides the energy exceeding threshold value EFD, which is sufficient for the creation of Frenkel defects at low temperature
Hole-electron mechanism of F-H pair generation in RbCl crystals with impurity electron traps
No full textTheoretical analysis of the kinetics of low-temperature defect recombination in alkali halide crystals
No full textFormation and stabilization of F centers following direct generation of self-trapped excitons in KCl crystals
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Excitation of intrinsic and extrinsic luminescence by synchrotron radiation in a NaF crystal
No full textIsothermal relaxation of electrical conductivity and luminescence in irradiated NaBr and KBr crystals
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Color center formation by synchrotron radiation in the Na6Al6Si6O24(Nal)1.6 optical ceramic
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