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Journal Article

Kinetics of dimer F2 type center annealing in MgF2 crystals

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Kuzovkov,  V. N.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Kotomin,  E. A.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Popov,  A. I.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Kuzovkov, V. N., Kotomin, E. A., & Popov, A. I. (2018). Kinetics of dimer F2 type center annealing in MgF2 crystals. Nuclear Instruments and Methods in Physics Research B, 435, 79-82.


Cite as: https://hdl.handle.net/21.11116/0000-000E-D4CC-D
Abstract
In this paper, we analyzed experimental annealing kinetics of the primary electronic F centers and dimer F-2 centers observed in MgF2 at higher radiation doses and temperatures. The developed phenomenological theory takes into account the interstitial ion diffusion and recombination with the F-2-centers, as well as mutual sequential transformation with temperature growth of three types of experimentally observed dimer centers: F-2(1), F-2(2), F-2(3) (which differ tentatively by charges (0, +1, +2) with respect to the host crystalline sites). The results of the electron, neutron and ion irradiation are compared. As the result, the relative initial concentrations of three types of F-2 electronic defects before annealing are obtained, along with energy barriers between their ground states as well as the relaxation energies.