Radiation defect production processes in activated KCl crystals

S. V. Dyachenko, L. E. Nagli, F. V. Pirogov

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An investigation is made of radiation defect production processes in KCl, KClTl and KClPb crystals under X‐ray irradiation at 290 and 85 K, respectively, as well as by irradiation with electron pulses with lengths of 50 ps and 5 ns at 290 K. The activator is found to localize electronic excitations near itself in the region of a capture radius Rc ≈ 4a. Besides, the activator leads to an increase of both, the probability of self‐trapped exciton decay into FH pairs and that of survival of F centres due to stabilization of H centres. Thus, the above three effects lead to a nonuniform distribution of F centres with respect to the activator. A mathematical model is developed to explain the experimental results obtained. The existence of Pb v–c2+ Vk centre is also reported.

Original languageEnglish
Pages (from-to)87-95
Number of pages9
JournalPhysica Status Solidi (A) Applied Research
Issue number1
StatePublished - 16 Jan 1988
Externally publishedYes


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