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    Wyświetlanie 1-6 z 6
    Tytuł:
    Modelling of new generation plasma optical devices
    Autorzy:
    Litovko, I. V.
    Goncharov, A. A.
    Dobrovolskiy, A. N.
    Naiko, L. V.
    Naiko, I. V.
    Tematy:
    anode layer
    plasma lens
    plasma accelerator
    plasma jet
    space charge
    Pokaż więcej
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Powiązania:
    https://bibliotekanauki.pl/articles/971496.pdf  Link otwiera się w nowym oknie
    Opis:
    The paper presents new generation plasma optical devices based on the electrostatic plasma lens configuration that opens a novel attractive possibility for effective high-tech practical applications. Original approaches to use of plasma accelerators with closed electron drift and open walls for the creation of a cost-effective low-maintenance plasma lens with positive space charge and possible application for low-cost, low-energy rocket engine are described. The preliminary experimental, theoretical and simulation results are presented. It is noted that the presented plasma devices are attractive for many different applications in the state-of-the-art vacuum-plasma processing.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transient plasma loads to the ITER divertor surfaces : simulation experiments with QSPA Kh - 50
    Autorzy:
    Garkusha, I. E.
    Aksenov, N. N.
    Chuvilo, A. A.
    Landman, I. S.
    Makhlaj, V. A.
    Malykhin, S. V.
    Pugachev, A. T.
    Sadowski, M. J.
    Skladnik-Sadowska, E.
    Tematy:
    plasma accelerator
    transient loads
    tungsten
    dust
    fusion reactor
    Pokaż więcej
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Powiązania:
    https://bibliotekanauki.pl/articles/147812.pdf  Link otwiera się w nowym oknie
    Opis:
    Experimental simulations of International Thermonuclear Experimental Reactor (ITER) transient events with relevant heat load and particle load parameters have been performed with a quasi-stationary plasma accelerator QSPA Kh-50. Pulsed plasma guns PPA and IBIS were also used for comparative studies of surface damages appearing under varying plasma parameters and sorts of plasma ions. Particular attention is paid to the material erosion due to particles ejection from the tungsten surfaces both in the form of droplets and solid dust. Generation mechanisms of the dust in the course of ELM-like plasma impacts to the tungsten surfaces are discussed
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A method of impurity diagnostics in dense plasma systems
    Autorzy:
    Tsarenko, A. V.
    Chebotarev, V. V.
    Sadowski, M. J.
    Tereshin, V. I.
    Tematy:
    impurity diagnostics
    local thermodynamical equilibrium
    plasma accelerator
    plasma-target interaction
    spectral line
    Pokaż więcej
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Powiązania:
    https://bibliotekanauki.pl/articles/146854.pdf  Link otwiera się w nowym oknie
    Opis:
    The analysis of a plasma impurity composition in many plasma systems (such as coaxial plasma accelerators, magnetic- plasma compressors, plasma-focus devices, and others) is of great importance for plasma physics. In this work we have proposed a new spectral method for the determination of impurity concentrations in relation to the concentration of the main plasma (made of hydrogen in our case). This technique can be used e.g. for diagnostics of a peripheral zone in Plasma-Focus (PF) discharges, where LTE conditions must be fulfilled. Advantages of this method in comparison with other methods, as well as possible errors, are considered and discussed.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calorimetric studies of the energy deposition on a material surface by plasma jets generated with QSPA and MPC devices
    Autorzy:
    Chuvilo, A. A.
    Garkusha, I. E.
    Makhlaj, V. A.
    Petrov, Y. V.
    Tematy:
    quasi steady-state plasma accelerator (QSPA)
    energy density
    heat load
    plasma streams
    plasma-surface interaction
    Pokaż więcej
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Powiązania:
    https://bibliotekanauki.pl/articles/147706.pdf  Link otwiera się w nowym oknie
    Opis:
    Studies of the energy deposition by plasma jets incident on a material surface are of topical interest for both the fusion and plasma technology applications. In this paper the results are reported of a comparative study of plasma energy deposition on different material surfaces exposed to plasma jets of various duration and energy density, generated using the QSPA Kh-50 and the MPC devices. The spatial distribution of plasma energy density and the heat load on the surface were measured with a movable calorimeter. The measurements demonstrate that in the case of an exposure to QSPA plasma jets the absorbed heat load is approximately equal to 55-60% of the energy in the incident plasma jet. In the case of plasma jets generated using the MPC device the heat load on the target surface and was practically the same as for the QSPA jets, and additional shielding effects were found to be negligible due to the short duration of plasma jets.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plasma Focus as a lens for intense ion beam focusing
    Autorzy:
    Belan, V. N..
    Butenko, V. I.
    Ivanov, B. I.
    Kiseleva, V. A.
    Kitsenko, A. B.
    Linnik, A. F.
    Maslov, V. I.
    Onishchenko, I. N.
    Prishchepov, V. P.
    Yegorov, A. M.
    Tematy:
    intense MeV proton beam accelerator
    plasma focus
    plasma lens
    Pokaż więcej
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Powiązania:
    https://bibliotekanauki.pl/articles/147316.pdf  Link otwiera się w nowym oknie
    Opis:
    Experimental investigations were performed to evaluate the focusing properties of the plasma focus for high-energy intense ion beams manipulating. Magnetic probes and optical spectroscopy were used for temporal and spatial plasma geometry investigations. Ion beam portrait was determined at the luminescence screen. In the experiments performed, the focusing coefficient was obtained as the ten times beam compression at the 30 cm length. By variations of the gas volume input, gun voltage, time delay, magnetic field value etc. the dependence of focused ion beam diameter upon various parameters of the plasma focus lens has been investigated. It was revealed that the main focusing effect was caused by the azimuthal magnetic field of the currents carried by the plasma.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ARIES 2018 : infrastructure, innovation, outreach
    Autorzy:
    Romaniuk, Ryszard S.
    Tematy:
    particle accelerators
    accelerator science and technology
    novel accelerators
    high field magnets
    superconducting magnets
    RF particle guns
    particle detectors
    high energy physics
    applications of particle accelerators
    laser and plasma accelerators
    community and social implications of ARIES
    EC Integrating Introduction
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/226770.pdf  Link otwiera się w nowym oknie
    Opis:
    This article has two outreach aims. It concisely summarizes the main research and technical efforts in the EC H2020 ARIES Integrating Activity – Accelerator Research and Innovation for European Science and Society [1] during the period 2017/2018. ARIES is a continuation of CARE, TIARA and EuCARD projects [2-3]. The article also tries to show these results as an encouragement for local physics and engineering, research and technical communities to participate actively in such important European projects. According to the author’s opinion this participation may be much bigger [4-27]. All the needed components to participate – human, material and infrastructural are there [4,7]. So why the results are not satisfying as they should be? The major research subjects of ARIES are: new methods of particles acceleration including laser, plasma and particle beam interactions, new materials and accelerator components, building new generations of accelerators, energy efficiency and management of large accelerator systems, innovative superconducting magnets, high field and ultra-high gradient magnets, cost lowering, system miniaturization, promotion of innovation originating from accelerator research, industrial applications, and societal implications. Two institutions from Poland participate in ARIES – these are Warsaw University of Technology and Institute of Nuclear Chemistry and Technology in Warsaw. There are not present some of the key institutes active in accelerator technology in Poland. Let this article be a small contribution why Poland, a country of such big research potential, contributes so modestly to the European accelerator infrastructural projects? The article bases on public and internal documents of ARIES project, including the EU Grant Agreement and P1 report. The views presented in the paper are only by the author and not necessarily by the ARIES.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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