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Study of the interrelation between the electrotechnical parameters of the plasma focus discharge circuit and the plasma compression dynamics on the PF-3 and PF-1000 facilities

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Abstract

The main stages of the plasma current sheath (PCS) dynamics on two plasma focus (PF) facilities with different geometries of the electrode system, PF-3 (Filippov type) and PF-1000 (Mather type), were studied by analyzing the results of the current and voltage measurements. Some dynamic characteristics, such as the PCS velocity in the acceleration phase in the Mather-type facility (PF-1000), the moment at which the PCS reaches the anode end, and the plasma velocity in the radial stage of plasma compression in the PF-3 Filippov-type facility, were determined from the time dependence of the inductance of the discharge circuit with a dynamic plasma load. The energy characteristics of the discharge circuit of the compressing PCS were studied for different working gases (deuterium, argon, and neon) at initial pressures of 1.5–3 Torr in discharges with energies of 0.3–0.6 MJ. In experiments with deuterium, correlation between the neutron yield and the electromagnetic energy deposited directly in the compressed PCS was investigated.

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Authors and Affiliations

  1. Troitsk Institute for Innovation and Fusion Research, Troitsk, Moscow, 142190, Russia

    K. N. Mitrofanov & E. V. Grabovski

  2. National Research Centre Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182, Russia

    V. I. Krauz, V. V. Myalton & V. P. Vinogradov

  3. Institute of Plasma Physics and Laser Microfusion, ul. Hery 23, Warsaw, 01-497, Poland

    M. Paduch

  4. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, Kraków, 31-342, Poland

    M. Scholz

  5. Faculty of Electrical and Computer Engineering, Łukasiewicz University of Technology, ul. Wincentego Pola 2, Rzeszów, 35-959, Poland

    L. Karpiński

Authors
  1. K. N. Mitrofanov
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  2. V. I. Krauz
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  3. E. V. Grabovski
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  4. V. V. Myalton
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  5. V. P. Vinogradov
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  6. M. Paduch
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  7. M. Scholz
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  8. L. Karpiński
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Correspondence to K. N. Mitrofanov.

Additional information

Original Russian Text © K.N. Mitrofanov, V.I. Krauz, E.V. Grabovski, V.V. Myalton, V.P. Vinogradov, M. Paduch, M. Scholz, L. Karpiński, 2015, published in Fizika Plazmy, 2015, Vol. 41, No. 5, pp. 413–433.

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Mitrofanov, K.N., Krauz, V.I., Grabovski, E.V. et al. Study of the interrelation between the electrotechnical parameters of the plasma focus discharge circuit and the plasma compression dynamics on the PF-3 and PF-1000 facilities. Plasma Phys. Rep. 41, 379–398 (2015). https://doi.org/10.1134/S1063780X15040030

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  • DOI: https://doi.org/10.1134/S1063780X15040030

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