Thermal annealing of radiation damages produced by swift 14N and 16O ions in LiF crystals
Sorokin M.V. Malikova Z.B. Dauletbekova A.K. Baubekova G. Aralbayeva G.M. Akilbekov A.T.
1 July 2024Institute of Physics
Materials Research Express
2024#11Issue 7
Annealing of color centers was studied in lithium fluoride crystals, irradiated with 23-MeV nitrogen and 28-MeV oxygen ions. Basing on the optical absorption spectroscopy and reaction-rate modelling, a new interpretation of the annealing kinetics at the practically important temperatures below 500 K is suggested. Proposed model explains simultaneous decrease of the F and F2/F3+ peaks as a result of migration of the F centers and formation of larger aggregates, and does not include additional assumptions about impurities and cation vacancies. It specifies the migration energy of the F centers in the ground state to be about 1.3 eV, that corresponds to earlier studies.
color centers , ion irradiation , lithium fluoride , optical absorption , thermal annealing
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National Research Centre, Kurchatov Institute, Kurchatov Square 1, Moscow, 123182, Russian Federation
L.N. Gumilyov Eurasian National University, 2 Satpayev St., Astana, 010008, Kazakhstan
National Research Centre
L.N. Gumilyov Eurasian National University
10 лет помогаем публиковать статьи Международный издатель
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