Optical Ceramics Synthesis in the Field of a Powerful Radiation Flux

Лисицын, В. М.; Лисицына, Л. А.; Ermolaev, A. V.; Мусаханов, Д. А.; Голковский, М. Г.

doi:10.1007/s11182-021-02467-3

Cited by 4 publications

(2 citation statements)

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“…A series of luminescence properties studies of the synthesized YAG:Ce ceramics was performed. Photoexcitation and photoluminescence (PL) spectra under stationary conditions using a Cary Eclipse spectrofluorometer and time-resolved cathodoluminescence (CL) spectra using a pulsed electron accelerator with an energy of 250 keV for excitation [ 17 , 18 , 19 , 20 ]. In a generalized form, the spectral-kinetic properties of the obtained YAG:Ce ceramics are shown in Figure 4 .…”

Section: Materials Synthesismentioning

confidence: 99%

Express Synthesis of YAG:Ce Ceramics in the High-Energy Electrons Flow Field

et al. 2023

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YAG:Ce ceramics by the direct action of an electron beam with 1.4 MeV energy were synthesized on a mixture of a stoichiometric composition of Y, Al, and Ce oxides without adding any substances to facilitate the process. The synthesis is realized in a time less than 1 s. The main structural phase of the obtained ceramics is YAG and YAP can be additional. The luminescence characteristics of the synthesized samples, the excitation, luminescence, decay time, and pulsed cathodoluminescence spectra, are similar to those known for YAG:Ce phosphors. The conversion efficiency of the excitation energy into the luminescence of the samples reaches 60–70% of those used for the manufacture of LED phosphors. The set of processes that determine the rate and efficiency of radiation synthesis differs from those occurring during thermal methods by the existence of a high degree of the initial compositions’ ionization under the influence of a radiation flux and a high probability of the decay of electronic excitations into short-lived radiolysis products.

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Section: Materials Synthesismentioning

confidence: 99%

Express Synthesis of YAG:Ce Ceramics in the High-Energy Electrons Flow Field

et al. 2023

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“…A promising method for obtaining ceramics based on refractory materials is synthesizing them in the field of a high−power flux of energetic radiation. The radiation synthesis method was successfully implemented for producing ceramics based on MgF 2 : W and YAG : Ce [2,3]. The ceramics were synthesized by the direct action of electron flux on stoichiometric mixtures of powders consisting of metal fluorides and oxides during less than 1 s. Among the method advantages there are unnecessity of adding any substances, extra process operations aimed at facilitating the process of the new phase formation, and high output (about 2 g/s under laboratory conditions).…”

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confidence: 99%

Luminescent and dosimetric properties of magnesium oxide ceramics synthesized by a high-energy electron beam

S.V.

V.M.

D.V.

et al. 2022

Technical Physics Letters

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For the first time, samples of magnesium oxide ceramics were obtained by a method based on irradiation of the oxide powders with a beam of fast electrons. Luminescence centers associated with intrinsic and impurity defects were found in the obtained samples. A comparative analysis of the thermoluminescence (TL) curves and dose dependencies of TL of MgO ceramics obtained by the radiation and thermochemical methods is carried out. The linear dose dependence of the TL peak at 370 K excited by a pulsed electron beam (130 keV, 1.5-30 kGy) is shown to be the main advantage of MgO ceramics for their use in TL dosimetry. Possible reasons for improving the linearity of the dose characteristics of the newly created ceramics in comparison with analogs are discussed. Keywords: magnesium oxide, thermoluminescent dosimetry, dose response, oxygen vacancies, pulsed cathodoluminescence.

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