Персона: Миськевич, Алексей Иустинович
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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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Алексей Иустинович
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- ПубликацияТолько метаданныеRadiative Characteristics of Xe2Cl* Molecules under High-Energy Electron Pumping of Xe-CCl4 and Ar-Xe-CCl4 Gas Mixtures with a Low CCl4 Content(2019) Mis'kevich, A. I.; Миськевич, Алексей ИустиновичSpontaneous and stimulated emissions of Xe2Cl* triplex molecules upon excitation of Xe-CCl4 gas mixtures with a low CCl4 content by a pulsed high-energy electron beam have been experimentally studied. The electron energy is 150 keV, and the pump current pulse duration and amplitude are 5 ns and 5 A, respectively. Emission of an Xe2Cl excimer molecule in the wavelength range of 430-650 nm is shown to consist of 13 narrow vibrational bands with half-widths similar to 14 nm peaking at 399, 413, 431, 451, 472, 492, 510.3, 534.9, 540.9, 551.7, 564.4, 581.6, and 603 nm. Under the given pumping conditions, a regime of weakly amplified spontaneous emission is implemented at the energy deposition to the gas of similar to 200 W/cm(3) on the axis of a 50-mm cell and the electron beam pumping in the wavelength range of 450-550 nm. Spontaneous emission of the 4(2)?-1(2)? band of a Xe2Cl* excimer molecule at (max) = 486 nm was amplified by a factor of 60 in a 100-cm cell under pumping of a dense He-3-Xe-CCl4 gas mixture by the He-3(n, p)T-3 nuclear reaction products at the energy deposition to the gas of similar to 5 mJ/cm(3) in a cavity with the mirror reflections of similar to 99.4% (totally reflecting mirror) and 98.5% (output mirror).
- ПубликацияТолько метаданныеRadiative Characteristics of Ar2Cl* Excimer Molecules under Pumping of an Ar + CCl4 Dense Gas Mixture by High-Energy Electrons(2021) Podkopaev, A. V.; Mis'kevich, A. I.; Миськевич, Алексей Иустинович© 2021, Pleiades Publishing, Ltd.Abstract: Spectral and temporal luminescence characteristics of gas mixtures (Ar + CCl4), excited by a pulsed high-energy electron beam (Ee = 220 keV, T = 5 ns), have been investigated. It is found that Ar2Cl* excimer molecules, emitting a wide continuum (42Γ–12Γ) at 245 nm, are formed in dense gas mixtures. Radiative deexcitation times and continuum quenching constants (λmax = 245 nm) by the gas mixture components (Ar and CCl4) are measured. A plasma chemical model of formation of Ar2Cl* excimer molecules in Ar + CCl4 dense gas mixtures under pumping by charged high-energy particles is proposed.
- ПубликацияТолько метаданныеGeneration and Quenching in the XeCl* Excimer Laser Pumped by Mixed Gamma-Neutron Radiation from a Nuclear Reactor(2024) Miskevich, A. I.; Миськевич, Алексей Иустинович