Abstract
The creation of radiation defects in LiBaF3 crystals at 10K and the processes of their thermostimulated recombination are investigated. The methods of optical absorption, thermal bleaching of color centers, thermostimulated luminescence and fractional glow technique are used. The radiation defects anneal in a multi-stage process accompanied with thermo-luminescence at 20, 46, 105, 130, 170, 210 and 270K. Differences in the optical absorption spectra measured before and after the TSL peaks are obtained and recombination parameters are determined. The TSL peak at 20K arises from the delocalization of H-centers. The presence of two TSL peaks related to VK-centers at 105 and 130K indicates that 60° and 90° migration hops occur.
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