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- W2936200021 abstract "Abstract—The luminescent characteristics of K_3LuSi_2O_7:Pr^3+ (1%), which is a promising optical material for the use as a scintillator, have been studied using a set of techniques. The luminescence spectra of K_3LuSi_2O_7:Pr^3+ (1%) contain two bands in the UV-range with peaks at 284 and 330 nm, which correspond intraconfigurational 5 d → 4 f transitions in the Pr^3+ ions. The radiation in the visible and near IR range (480–850 nm) has been represented by the intraconfigurational 4 f → 4 f transitions. The kinetics of 5 d → 4 f -luminescence contains a build-up stage (τ_rise ∼ 7–12 ns), nonexponential decay stage (τ_1/2 ∼ 60 ns), and a slow component of the μs-range when excited by high-frequency (∼8 MHz) synchrotron radiation of the X-ray range. The fast component of the decay (τ = 54 ns) dominates in the decay kinetics of luminescence along with the build-up stage while the contribution of the μs decay component is less than 0.5% at the excitation by an pulse electron beam (5Hz). The excitation spectra of d – f - and f–f -photoluminescence in the ultraviolet and vacuum ultraviolet range that are measured using synchrotron radiation reveal features that are caused by both intracenter transitions and processes related to the energy transfer from the intrinsic electronic excitations to the impurity center." @default.
- W2936200021 created "2019-04-25" @default.
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- W2936200021 date "2019-01-01" @default.
- W2936200021 modified "2023-10-05" @default.
- W2936200021 title "Спектроскопия и кинетика люминесценции ионов Pr-=SUP=-3+-=/SUP=- в K-=SUB=-3-=/SUB=-LuSi-=SUB=-2-=/SUB=-O-=SUB=-7-=/SUB=- : Pr-=SUP=-3+-=/SUP=-" @default.
- W2936200021 doi "https://doi.org/10.21883/ftt.2019.05.47581.11f" @default.
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