Персона: Лебединский, Юрий Юрьевич
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Юрий Юрьевич
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- ПубликацияТолько метаданныеApplication of keV-energy proton scattering for thin film analysis(2019) Bulgadaryan, D.; Sinelnikov, D.; Kurnaev, V.; Efimov, N.; Borisyuk, P.; Lebedinskii, Y.; Синельников, Дмитрий Николаевич; Ефимов, Никита Евгеньевич; Борисюк, Петр Викторович; Лебединский, Юрий Юрьевич© 2018 Elsevier B.V. Hydrogen ions are not widely used in low or medium-energy ion scattering spectroscopy. However, in certain cases, the use of non-destructive hydrogen ions with low nuclear stopping may provide additional information compared with noble gas ions. In this work, we describe in situ analysis of nanometer layer deposition of Au on Si and vice versa using keV-energy proton scattering spectroscopy. Ion beam sputtering and thermal evaporation were used for deposition of surface layers. The maximum thickness of deposited layers was measured with X-ray photoelectron spectroscopy and surface profiler. The accuracy of in situ surface layer thickness determination with energy spectra of scattered protons is discussed.
- ПубликацияТолько метаданныеA Unique System for Registering One-Photon Signals in the Ultraviolet Range from An Isomeric 229mTh Nucleus Implanted on Thin SiO2/Si Films(2020) Lebedinskii, Y. Y.; Borisyuk, P. V.; Chubunova, E. V.; Kolachevsky, N. N.; Vasiliev, O. S.; Tkalya, E. V.; Лебединский, Юрий Юрьевич; Борисюк, Петр Викторович; Чубунова, Елена Витальевна; Васильев, Олег Станиславович; Ткаля, Евгений Викторович© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimCurrently, an urgent task related to creating a nuclear frequency standard is the identification of a low-lying nuclear state in the thorium-229 isotope. Herein, a method for measuring the single-photon energy during the decay of an isomeric thorium-229 nucleus implanted in a wide-gap dielectric SiO2 (Eg = 9 eV) is developed. The proposed method utilizes thin silicon oxide layers obtained by thermal oxidization of the pure silica wafers, which allows measurement of the energy of photons in the ultraviolet (UV) range using an electronic spectrometer. The modeling study of electronic state excitation is provided via UV radiation from Kr, Xe, and D resonance discharging lamps. The obtained spectra are analyzed, and a method for determining the UV photon's energy is proposed.
- ПубликацияТолько метаданныеFormation and properties of thin Mo and Mo oxide nanoparticle films(2020) Borisyuk, P. V.; Vasilyev, O. S.; Lebedinskii, Y. Y.; Bortko, D. V.; Balakhnev, K. M.; Борисюк, Петр Викторович; Васильев, Олег Станиславович; Лебединский, Юрий Юрьевич; Бортко, Диана Владимировна; Балахнёв, Кирилл Максимович© 2019 Elsevier B.V.The paper presents a study of thin Mo films, consisted of individual nanoparticles of 3.5–5.5 nm in diameter. Their chemical, electron, and optical properties are studied. It is shown that thin films consisting of individual Mo nanoparticles can be formed from the gas phase by magnetron sputtering. Atmospheric exposure leads to the formation of MoOx oxide shell around the metal nuclei of Mo nanoparticles in the films and changes in its electronic structure. Optical properties of the obtained films consisted of ‘core–shell’ Mo@MoOx nanoparticles are investigated. It is shown that the absorption window falls on the range of 190–300 nm, which can be used in the development of single-photon detectors sensitive to weak ultraviolet signals from long-live states, for example from Th-229 low-lying isomeric state.