Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112263
Title: Effect of An Electron Beam Irradiation on Optical and Luminescence Properties of LiBaAlF6 Single Crystals
Authors: Ogorodnikov, I. N.
Pustovarov, V. A.
Omelkov, S. I.
Kirm, M.
Issue Date: 2017
Publisher: Elsevier B.V.
Elsevier BV
Citation: Effect of An Electron Beam Irradiation on Optical and Luminescence Properties of LiBaAlF6 Single Crystals / I. N. Ogorodnikov, V. A. Pustovarov, S. I. Omelkov et al. // Optical Materials. — 2017. — Vol. 69. — P. 344-351.
Abstract: Paper reports the effect of a 10 keV, 110 keV and 10 MeV electron beam irradiation on optical and luminescence properties of LiBaAlF6 (LBAF) single crystals at 10, 90, and 293 K. Five absorption bands at 2.0, 3.2, 4.3, 4.9 and 5.5 eV were revealed in irradiated crystals in the energy range of 1.2–9.5 eV. Several PL emission bands (1.7–1.8, 2.2 and 2.5–3.5 eV) related to defects were found in the luminescence spectra at room temperature, while only one luminescence band at E = 2.2 eV appears at T = 90 K in LBAF crystals after a 10 MeV electron bombardment. The PL excitation spectra and time-response for these emission bands were studied at 10, 90, and 293 K. Thermoluminescence (TL) of irradiated crystals was studied in the temperature range of 90–740 K. New TL glow peaks at 166, 530 and 670 K were revealed and their parameters were determined. Temperature dependence of relative photoluminescence yield recorded monitoring emission at the 1.87 and 2.23 eV in the temperature range from 130 to 450 K, were fitted using five quenching processes related to TL glow peaks revealed in our research. Significant similarity in the manifestation of radiation-induced defects for LBAF and previously studied LiBaF3 single crystals is noted. The effect of an electron beam irradiation on optical and luminescence properties of LBAF single crystals and possible origin of the radiation defects were discussed. © 2017 Elsevier B.V.
Keywords: ELECTRON BEAM IRRADIATION
FLUORIDE CRYSTAL LBAF
LUMINESCENCE SPECTRA
OPTICAL ABSORPTION SPECTRA
RADIATION DEFECTS
ALUMINUM COMPOUNDS
BARIUM COMPOUNDS
CRYSTAL DEFECTS
ELECTRON BEAMS
ELECTRONS
FLUORINE COMPOUNDS
IRRADIATION
LIGHT ABSORPTION
LITHIUM COMPOUNDS
LUMINESCENCE OF INORGANIC SOLIDS
RADIATION
TEMPERATURE DISTRIBUTION
THERMOLUMINESCENCE
ELECTRON BEAM IRRADIATION
FLUORIDE CRYSTALS
IRRADIATED CRYSTALS
LUMINESCENCE PROPERTIES
LUMINESCENCE SPECTRUM
RADIATION DEFECTS
RADIATION INDUCED DEFECTS
TEMPERATURE DEPENDENCE
SINGLE CRYSTALS
URI: http://hdl.handle.net/10995/112263
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85018751476
PURE ID: 1816817
ISSN: 0925-3467
metadata.dc.description.sponsorship: This work was partially supported by the Ministry of Education and Science of the Russian Federation (Contract No.02.A03.21.0006) (the basic part of the government mandate), the Center of Excellence "Radiation and Nuclear Technologies" (Competitiveness Enhancement Program of Ural Federal University, Russia), HASYLAB DESY (Project No.20110843), Estonian Research Council (projects IUT2-26 and PUT1081). We are grateful to Ludmila Isaenko for providing the crystals examined and Eugene Vasilchenko for recording a high-temperature TL glow curve.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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