EFFECT OF PRE-IRRADIATION TEMPERATURE EXPOSURE ON THE FORMATION OF COLOR CENTERS WITH NEW CHARACTERISTICS IN MAGNESIUM AND LITHIUM FLUORIDES NANOCRYSTALS
Abstract
It is shown that the ratio of concentrations of near-cluster and conventional radiation color centers increases in magnesium fluoride nanocrystals in the case when the manufactured samples before irradiation are kept for some time at a temperature higher than the anion vacancies mobility temperature. Such preirradiation heat exposure on lithium fluoride nanocrystals leads to the formation of near-cluster aggregation color centers during radiation exposure of the samples. It is established that differences in pre-irradiation thermal effects on the samples affect the kinetic of concentration growth of aggregate near-cluster centers in the post-radiation period. Conclusions are made about the mechanism and processes of nanoclusters formation in the samples, as well as about the defects involved in the formation.
About the Authors
A. P. Voitovich
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Minsk, 220072
Belarus
Minsk, 220072
V. S. Kalinov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Minsk, 220072
Belarus
Minsk, 220072
O. E. Kostik
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Minsk, 220072
Belarus
Minsk, 220072
V. V. Mashko
SSPA “Optics, Optoelectronics, and Laser Technology”
Belarus
Minsk, 220072
Belarus
Minsk, 220072
A. N. Novikov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Minsk, 220072
Belarus
Minsk, 220072
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Review
For citations:
Voitovich A.P., Kalinov V.S., Kostik O.E., Mashko V.V., Novikov A.N. EFFECT OF PRE-IRRADIATION TEMPERATURE EXPOSURE ON THE FORMATION OF COLOR CENTERS WITH NEW CHARACTERISTICS IN MAGNESIUM AND LITHIUM FLUORIDES NANOCRYSTALS. Zhurnal Prikladnoii Spektroskopii. 2020;87(5):770-776. (In Russ.)
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