Abstract:
The spectra of absorption and gamma luminescence and integral thermoluminescence curves (300–605 K) of nominally pure LuAG crystals and praseodymium-doped LuAG:Pr crystals have been analyzed before and after irradiation with fast (>> 0.1 MeV) neutrons in the range of fluences of 101515–101717 cm−2−2. The optical spectra of LuAG:Pr, irradiated with neutrons with a fluence of 101717 cm−2−2, after thermal bleaching to 605 K and subsequent γγ irradiation and illumination in the induced band of 573 nm, indicate the electron transfer from the induced VО(Cimp) center to the hole Pr4+ center with radiation in Pr3+. In the case of high-dose (for the LHC supercollider (HL–LHC)) neutron irradiation at > 300 K, localization of electrons on the induced F+ and VО(Cimp) defects and localization of holes on the activator Pr4+ centers decrease the intensity of high-speed (20 ns) activator luminescence and induces the occurrence of the long-term component in the recombination process.
Keywords:
lutetium aluminum garnet, neutron induced defects, color centers, γ-luminescence, thermal glow and luminescence.
This study was supported by the budget project over the Program of Scientific Research Appendix 1 to the Resolution of the President PP-4526 dated by November 21, 2019.
Citation:
A. Kh. Islamov, E. M. Ibragimova, I. A. Khayitov, R. R. Vil'danov, “Charge transfer between neutron-induced and activator centers in LuAG:Pr single crystal”, Optics and Spectroscopy, 129:10 (2021), 1249–1256; Optics and Spectroscopy, 130:3 (2022), 180–187
\Bibitem{IslIbrKha21}
\by A.~Kh.~Islamov, E.~M.~Ibragimova, I.~A.~Khayitov, R.~R.~Vil'danov
\paper Charge transfer between neutron-induced and activator centers in LuAG:Pr single crystal
\jour Optics and Spectroscopy
\yr 2021
\vol 129
\issue 10
\pages 1249--1256
\mathnet{http://mi.mathnet.ru/os41}
\crossref{https://doi.org/10.21883/OS.2021.10.51489.1836-21}
\elib{https://elibrary.ru/item.asp?id=47133780}
\transl
\jour Optics and Spectroscopy
\yr 2022
\vol 130
\issue 3
\pages 180--187
\crossref{https://doi.org/10.1134/S0030400X22030079}
Linking options:
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This publication is cited in the following 1 articles:
A.Kh. Islamov, E.M. Ibragimova, Kh.N. Kudratov, I.A. Khayitov, R.R. Vildanov, “Effects of fast neutrons and gamma components on color centers and activator glow in Lu2SiO5:Ce scintillator crystals”, Optical Materials, 145 (2023), 114459