Time-resolved high energy ionoluminescence of Al2O3
Seitbayev A. Skuratov V.A. Dauletbekova A. Teterev Y.G. Krylov A.N. Mamatova M. Koloberdin M. Zdorovets M.
15 August 2021Elsevier B.V.
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
2021#500-50146 - 51 pp.
We have compared the luminescence decay from intact and pre-damaged Al2O3 crystals registered during single swift heavy ion and photo- picosecond laser pulse excitation (λex. = 440 nm). The decay curves measured during 1.2 ÷ 1.6 MeV/amu C, Ar, V, Kr, Xe ion irradiation at room temperature are composed of three components – fast (τ1 < 1 ns), τ2 = 1.8 ns (F+-centers) and τ3 = 54–80 ns (E-luminescence, the nature of emission is under discussion). The measurements performed on pre-irradiated samples have demonstrated that accumulated radiation damage suppresses the E-luminescence and only τ1 and τ2 components are observed. It was found that photoexcitation at 440 nm induces strong emission of F22+- centers with a lifetime of about 8 ns which is not detected during high energy ion irradiation. This is ascribed to the quenching effect of high density excitations in a particle track.
Electronic stopping power , Photoluminescence , Swift heavy ions , Time–resolved ionoluminescence , α-Al2O3
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L.N. Gumilyov, Eurasian National University, Nur-Sultan, Kazakhstan
Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russian Federation
National Research Nuclear University MEPhI, Moscow, Russian Federation
Dubna State University, Dubna, Moscow Region, Russian Federation
Nur-Sultan Branch of Institute of Nuclear Physics, Nur-Sultan, Kazakhstan
Ural Federal University, Yekaterinburg, Russian Federation
L.N. Gumilyov
Flerov Laboratory of Nuclear Reactions
National Research Nuclear University MEPhI
Dubna State University
Nur-Sultan Branch of Institute of Nuclear Physics
Ural Federal University
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