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    Wyświetlanie 1-5 z 5
    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.
    Powiązania:
    https://bibliotekanauki.pl/articles/147812.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma accelerator
    transient loads
    tungsten
    dust
    fusion reactor
    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
    Źródło:
    Nukleonika; 2012, 57, 2; 167-170
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies of plasma interactions with tungsten targets in PF-1000U facility
    Autorzy:
    Ladygina, M. S.
    Skladnik-Sadowska, E.
    Zaloga, D. R.
    Sadowski, M. J.
    Kubkowska, M.
    Kowalska-Strzeciwilk, E.
    Krawczyk, N.
    Paduch, M.
    Miklaszewski, R.
    Garkusha, I. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147524.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma-surface interaction
    plasma streams
    tungsten
    plasma focus
    PF-1000U
    Opis:
    This paper presents results of experimental studies of tungsten samples of 99.95% purity, which were irradiated by intense plasma-ion streams. The behaviour of tungsten, and particularly its structural change induced by high plasma loads, is of great importance for fusion technology. The reported measurements were performed within a modifi ed PF-1000U plasma-focus facility operated at the IFPiLM in Warsaw, Poland. The working gas was pure deuterium. In order to determine the main plasma parameters and to study the behaviour of impurities at different instants of the plasma discharge, the optical emission spectroscopy was used. The dependence of plasma parameters on the initial charging voltage (16, 19 and 21 kV) was studied. Detailed optical measurements were performed during interactions of a plasma stream with the tungsten samples placed at the z-axis of the facility, at a distance of 6 cm from the electrode outlets. The recorded spectra showed distinct WI and WII spectral lines. Investigation of a target surface morphology, after its irradiation by intense plasma streams, was performed by means of an optical microscope. The observations revealed that some amounts of the electrodes material (mainly copper) were deposited upon the irradiated sample surface. In all the cases, melted zones were observed upon the irradiated target surface, and in experiments performed at the highest charging voltage there were formed some cracks.
    Źródło:
    Nukleonika; 2016, 61, 2; 149-153
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Yb on Valence Band Density of States of CdYbTe and PbYbTe - a Resonant Photoemission Study
    Autorzy:
    Szamota-Sadowska, K.
    Kowalski, B. J.
    Guziewicz, E.
    Orłowski, B. A.
    Sadowski, J.
    Gołacki, Z.
    Ghijsen, J.
    Johnson, R. L.
    Belkhou, R.
    Radosavkič, D.
    Martinotti, D.
    Barrett, N.
    Guillot, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1952185.pdf
    Data publikacji:
    1996-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Vv
    Opis:
    Photoemission measurements using synchrotron radiation were performed on PbYbTe (bulk crystal) and CdYbTe (MBE thin film). The resonant enhancement of the photoemission was applied for investigation of the contribution of Yb 4f electrons to the valence band. The set of the energy distribution curves was collected for energies in the region close to the 4d-4f Fano transition. The Yb 4f$\text{}^{14}$ were observed at the binding energies close to the edge of the valence band while the 4f$\text{}^{13}$ states were revealed deep in the valence band.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 5; 943-946
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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