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Annealing of Radiation Defects in X-Irradiated LiBaF3

  • Peteris Kulis (a1), Uldis Rogulis (a1), Maris Springis (a1), Ivars Tale (a1), Aris Veispals (a1), Andis Groza (a1) and Valters Ziraps (a1)...

Abstract

Results of application of the glow rate technique GRT for analysis of the activation energy of thermostimulated annealing of X-ray created F-type color centers in LiBaF3 crystals, pure and containing hetero-valence oxygen centers are presented. It is shown that depending on impurity composition in crystal two alternative mechanisms are involved in annealing of color centers. It is proposed that either the anion vacancy governed migration of F- centers resulting in recombination with complementary defects, or the thermal delocalization of radiation created fluorine (Fi) interstitials captured by anti-structure defects followed by recombination with all kinds of complementary F- type centers are responsible for the recombination of radiation defects above RT.

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1. Kulis, P., Tale, I., Springis, M., Rogulis, U., Trokss, J., Veispals, A. and Fitting, H.-J., Radiation Effects and Defects in Solids 149, 97 (1999).
2. Prado, L., Gomes, L. and Baldochi, S. L., J. Phys.: Condens. Matter 10, 8247 (1998).
3. Tale, I. I., Springis, M. M., Kulis, P., U.Rogulis, J.Trokss, Veispals, A. and Fitting, H.-J., Radiation Measurements 29, 279 (1998).
4. Kulis, P., Tale, I., Springis, M., Rogulis, U., Trokss, J., Veispals, A. and Fitting, H.-J., Radiation Effects and Defects in Solids 155, 77 (2001).
5. Tale, I., Rudlof, G., and Tale, V., Radiat Prot. Dosimetry, 65, 33 (1996)
6. Kulis, P., Tale, I. and Rudlof, G., Radiation Measurements, 33, 829 (2001).
7. Ziraps, V., Kulis, P., Tale, I., Radiation Effects and Defects in Solids 149, 183 (1999).

Annealing of Radiation Defects in X-Irradiated LiBaF3

  • Peteris Kulis (a1), Uldis Rogulis (a1), Maris Springis (a1), Ivars Tale (a1), Aris Veispals (a1), Andis Groza (a1) and Valters Ziraps (a1)...

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