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Effect of Irradiation on Impurity–Vacancy Dipoles in KBr Crystals Doped with Strontium by R. Muccillo; J. Rolfe is a Physics and Astronomy article available to read on EtoBox.

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## Abstract The concentration of impurity–vacancy dipoles in potassium bromide crystals doped with strontium bromide was measured using the ionic thermocurrent (ITC) technique. The parameters of the dipole relaxation are: fundamental relaxation time 4 × 10^−14^~s~, activation enthalpy 0.66 eV. The effect of ^60^Co γ‐irradiation at room temperature was to reduce the number of dipoles and to increase the number of trapped holes and electrons, but the number of trapped holes and electrons, measured by optical absorption, was about 30 times smaller than the number of dipoles destroyed. It is proposed that the effect of irradiation is to increase the rate of aggregation of dipoles, primarily into trimer aggregates, through temporary electron trapping by strontium ions.

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Author

R. Muccillo; J. Rolfe

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 0370-1972)

Published

1974

Language

EN

Field

Physics and Astronomy (Physical Sciences)