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Wyszukujesz frazę "Ivanov, Y. S." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Investigation of the pulse plasma stream
    Autorzy:
    Evtikhin, V. A.
    Lyublinsky, I. E.
    Vertkov, A. V.
    Ivanov, L. I.
    Ivanov, Y. P.
    Krokhin, O. N.
    Nikulin, V. Y.
    Polukhin, S. N.
    Safronova, T. V.
    Tikhomirov, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/148327.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    interaction of plasma with matter
    lithium capillary porous system
    plasma dynamics
    plasma focus
    thermonuclear reactor
    Opis:
    In this report we present a first series of tests of the lithium Capillary Porous System (CPS). We suppose that such a system can be used as a first wall in a thermonuclear reactor. The main goal of the presented work was to study the behavior of the lithium CPS in the condition simulating the influence of plasma in various operating regimes of the thermonuclear reactor. The tests were conducted in a Plasma Focus (PF) installation. The preliminary analysis of the received results confirms the high resistance of the lithium CPS to the pulse influence of plasma flows.
    Źródło:
    Nukleonika; 2001, 46, suppl. 1; 113-115
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cobalt Additives Influence on Phase Composition and Defect Structure of Manganese Dioxide Prepared from Fluorine Containing Electrolytes
    Autorzy:
    Sokolsky, G.
    Ivanov, S.
    Ivanova, N.
    Boldurev, Ye.
    Kobulinskaya, O.
    Demchenko, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1550089.pdf
    Data publikacji:
    2010-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.66.Fn
    61.72.-y
    85.40.Ry
    Opis:
    Manganese dioxide samples were prepared from fluorine containing electrolytes with additives of $Co^{2+}$ ions. Atomic absorption spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis were the methods of the samples characterisation. Manganese dioxide at the presence of cobalt forms nanosized ramsdellite structure crystallites of mostly needle-like morphology with significant content of hydroxide groups. The main phase state in manganese dioxide samples obtained at the presence of cobalt is $γ-MnO_{2}$ with ramsdellite structure and low content of intergrowth defects. The sample doped both with lithium and cobalt can be indexed to a hollandite-type structure (tetragonal; space group I4/m) of $α-MnO_{2}$.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 1; 86-90
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dispersion of Al-Si Alloy Structure by Intensive Pulsed Electron Beam
    Autorzy:
    Konovalov, S.
    Gromov, V.
    Zaguliyaev, D.
    Ivanov, Y.
    Semin, A.
    Rubannikova, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381713.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    silumin
    structure Al-Si
    electron beam processing
    crystallization cells
    dispersion
    struktura Al-Si
    obróbka wiązką elektronową
    krystalizacja
    dyspersja
    Opis:
    By the method of modern physical material science (optic microscopy scanning and transmission electron microscopy) the analysis of structural phase states, the morphology of the second phase inclusions and defect substructure of Al-Si alloy (silumin) of hypoeutectic composition, subjected to electron beam processing was done with the following parameters: energy density 25-35 J/cm2, beam length 150 μs, pulse number – 3, pulse repetition rate – 0.3 Hz, pressure of residual gas (argon) 0.02 Pa. The surface irradiation results in the melting of the surface layer, the dissolution of boundary inclusions, the stricture formation of high speed cellular crystallization of submicron sizes, the repeated precipitation of the second phase nanodimentional particles. With the increased distance from the irradiation surface the layer containing the second phase inclusions of quasi-equilibrium shape along with the crystallization cells was revealed. It is indicative of the processes of Al-Si alloy structure globalization on electron beam processing.
    Źródło:
    Archives of Foundry Engineering; 2019, 2; 79-84
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Studies of Thermally Activated Vertical Hole Transport in ZnCdSe/ZnSSe Superlattice
    Autorzy:
    Lebedev, A.
    Sorokin, S.
    Toropov, A.
    Shubina, T.
    Il'inskaya, N.
    Nekrutkina, O.
    Ivanov, S.
    Pozina, G.
    Bergman, P.
    Monemar, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1991641.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.66.Hf
    78.45.+h
    71.35.-y
    78.47.+p
    72.80.Ey
    Opis:
    Miniband transport in alternatively-strained ZnCdSe/ZnSSe short period superlattices is investigated using a structure with an enlarged quantum well. Temperature dependences of time-resolved and continuous wave photoluminescence have been measured, demonstrating an efficient temperature-induced vertical hole transport. A quantitative description is given for the carrier kinetics in these structures.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 421-426
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    AlGaN Quantum Well Heterostructures for Mid-Ultraviolet Emitters with Improved Room Temperature Quantum Efficiency
    Autorzy:
    Shevchenko, E.
    Toropov, A.
    Nechaev, D.
    Jmerik, V.
    Shubina, T.
    Ivanov, S.
    Yagovkina, M.
    Pozina, G.
    Bergman, J.
    Monemar, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1376069.pdf
    Data publikacji:
    2014-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.67.De
    78.55.Cr
    71.35.-y
    78.66.-w
    Opis:
    We report on optical studies of exciton localization and recombination kinetics in two single 2.2 nm thick $Al_{x}Ga_{1-x}N$/$Al_{x+0.1}Ga_{0.9-x}N$ quantum well structures (x=0.55 and 0.6) grown by plasma assisted molecular beam epitaxy on a c-sapphire substrate. Strong localization potential inherent for both the quantum well and barrier regions results in merging of the quantum well and barrier emission spectra into a single broad line centered at 285 nm (x=0.55) and 275 nm (x=0.6). Time-resolved photoluminescence measurements revealed surprising temperature stability of the photoluminescence decay time constant ( ≈ 400 ps) relevant to the recombination of the quantum well localized excitons. This observation implies nearly constant quantum efficiency of the quantum well emission in the whole range from 4.6 to 300 K.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 5; 1140-1142
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the nature of changes in the optical characterization produced in sapphire on its irradiation with a pulsed powerful stream of hydrogen ions
    Autorzy:
    Gribkov, V.
    Ivanov, L.
    Maslyaev, S.
    Pimenov, V.
    Sadowski, M.
    Skladnik-Sadowska, E.
    Banaszak, A.
    Kopeć, G.
    Cheblukov, Y.
    Kozodaev, M. A.
    Suvorov, A. L.
    Smirnov, I. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/147991.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    optical characteristics
    irradiation
    fast ion stream
    morphology
    Opis:
    Changes in the optical characteristics in synthetic sapphire specimens produced by microsecond pulse irradiation with a stream of hydrogen ions of energies ranging up to tens keV have been observed. Data on decrease in the optical reflection, measured within the wavelength range of 200 900 nm, are presented. This characterization is compared with the data received by optical and atomic force microscopy as well as by lattice structure analysis performed with X-rays. The measurements indicate that the changes of optical parameters are not a consequence of absorption increase and/or sapphire decomposition. They result from modifications of the morphology and structure of surface layer of the sapphire samples, induced by irradiation.
    Źródło:
    Nukleonika; 2004, 49, 2; 43-49
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    0.2-kJ and 2-kJ high rep rate Dense Plasma foci : their design, technology, and applications
    Autorzy:
    Dubrovsky, A. V.
    Gribkov, V. A.
    Ivanov, Y. P.
    Lee, P.
    Lee, S.
    Liu, M.
    Samarin, V. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/146546.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    DPF installation
    miniature focus chamber
    soft and hard X-ray radiation
    Opis:
    The paper presents various designs of several medium and small size Dense Plasma Focus (DPF) chambers intended for numerous applications, a description of technologies used in these facilities, and some results reached with these devices by using a number of diagnostic techniques. In present experiments the DP foci have been used mainly as an X-ray source. We discuss here how it is possible to satisfy absolutely new and very strict demands on the construction and technology for the devices to be eventually applied in science and industry. Between these characteristics there are a high repetition rate (typically 1…15 Hz) and a long lifetime (over 1 million shots). Their switching elements, a collector and chambers must withstand a high quasi-continuous heat load (up to 100 kW). High energy density in the central part of the chamber anode and the necessity to provide a channel for radiation extraction demanded a special construction and specific materials implementation in this region. Their X-ray spectrum should be tuned. They have to operate with different working gases and preferably in a wide range of pressures. All these points are discussed in this report. Capabilities of the described techniques are illustrated by results of the recent experimental studies carried out with facilities located at the Nanyang Technological University (NX1) as well as at the Lebedev Physical Institute (PF-0.2).
    Źródło:
    Nukleonika; 2001, 46, suppl. 1; 107-111
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental study of a powerful energy flow effect on materials in PF-1000 installation
    Autorzy:
    Borowiecki, M.
    De Chiara, P.
    Dubrovsky, A. V.
    Dyomina, E. V.
    Gribkov, V. A.
    Ivanov, L. I.
    Maslyaev, S. A.
    Mezzetti, F.
    Miklaszewski, R.
    Pimenov, V. N.
    Pizzo, L.
    Scholz, M.
    Szydlowski, A.
    Ugaste, Y. E.
    Volobuev, I. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/148824.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    irradiation
    plasma jet
    shock wave
    test specimen
    Opis:
    The report describes some of the results obtained in an experimental study of the impact of a powerful plasma stream and a fast ion beam generated in a PF-1000 device on different materials perspective for the use in radiation loaded parts of pulsed plasma installations. Investigations were done during and after the interaction processes. It is shown that in case of irradiation of samples only by high power flux density plasma streams the effect of detachment still preserved. At the same time a low power flux density high-energy ion beam plays an important role in the process of saturation of the irradiated material by hydrogen.
    Źródło:
    Nukleonika; 2001, 46, suppl. 1; 117-122
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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