Relaxation kinetics of correlated neutral Frenkel pairs of defects in alkali-halide crystals

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Abstract

A modelling method is developed that permits qualitative investigation of the evolution of genetic pairs of Frenkel defects in alkali-halide crystals (AHC). The relaxation kinetics and the form of the low-temperature annealing curves of F-, H-pairs are determined by initial mutual distribution functions (IDF) of the pairs being formed up to the time of excess energy dissipation by an H-center. It is shown that, because of discreteness of the lattice for AHC, interactions between the F- and H-centers are characteristic of IDF with a nonuniform spacing distribution of the F- and H-pairs. Fundamental regularities of Frenkel defect relaxation after pulse exposure and of F-, H-pair annealing after low-temperature AHC exposure are discussed on the basis of modelling results.

Original languageEnglish
Pages (from-to)167-171
Number of pages5
JournalSoviet Physics Journal
Volume32
Issue number3
DOIs
Publication statusPublished - Mar 1989

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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