Email this article Effects of γ-radiation on fluorite crystals with a trivalent rare-earth ions
- Authors: Sarkisov S.E.1, Yusim V.A.1
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Affiliations:
- National Research Center 'Kurchatov Institute'
- Issue: No 2(114) (2023)
- Pages: 195-202
- Section: Radiation materials science
- URL: https://journals.rcsi.science/1994-6716/article/view/306002
- DOI: https://doi.org/10.22349/1994-6716-2023-114-2-195-202
- ID: 306002
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Abstract
The paper considers phenomena of formation of color centers due to intrinsic and impurity defects in fluorite crystals activated by rare-earth ions Pr3+, Nd3+, Yb3+ under γ- and UV-radiation. Using CaF2 activated with Yb3+ and Pr3+ ions as an example, the work shows the effect of the photodynamic process on the photochemical resistance to formation of color centers of a Yb-containing crystal. It also demonstrates the effect of heating on the restoration of the original color of a Pr-containing crystal after γ-radiation as a result of change in the electronic state of praseodymium ions. The features of the formation of ions in the R2+ state in CaF2:R3+ (R3+ = Pr, Nd, Yb) crystals after γ-irradiation are investigated and explained, and quantitative estimates of the R3+→R2+ conversion processes are given.
About the authors
S. E. Sarkisov
National Research Center 'Kurchatov Institute'
Author for correspondence.
Email: Yusim_VA@nrcki.ru
Cand Sc (Phys-Math) 1 Akademika Kurchatova Square, 123182, Moscow, Russian Federation
V. A. Yusim
National Research Center 'Kurchatov Institute'
Email: Yusim_VA@nrcki.ru
Cand Sc (Eng) 1 Akademika Kurchatova Square, 123182, Moscow, Russian Federation
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