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Dynamics of the plasma current sheath in plasma focus discharges in different gases

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Abstract

The shape of the plasma current sheath (PCS) in the final stage of its radial compression, the dynamics of pinching, and the subsequent pinch decay in plasma focus (PF) discharges in different gases are studied using an improved multichannel system of electron-optical plasma photography and a newly elaborated synchronization system. The PCS structure in discharges in heavy gases (Ne, Ar) is found to differ significantly from that in discharges in hydrogen and deuterium. The influence of a heavy gas (Хе) additive to hydrogen and deuterium on the structure and compression dynamics of the PCS is investigated.

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Authors and Affiliations

  1. National Research Center Kurchatov Institute, Moscow, 123182, Russia

    V. P. Vinogradov, V. I. Krauz, V. V. Myalton & A. M. Kharrasov

  2. Project Center ITER, Moscow, 123182, Russia

    A. N. Mokeev

Authors
  1. V. P. Vinogradov
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  2. V. I. Krauz
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  3. A. N. Mokeev
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  4. V. V. Myalton
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  5. A. M. Kharrasov
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Correspondence to V. I. Krauz.

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Original Russian Text © V.P. Vinogradov, V.I. Krauz, A.N. Mokeev, V.V. Myalton, A.M. Kharrasov, 2016, published in Fizika Plazmy, 2016, Vol. 42, No. 12, pp. 1033–1045.

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Vinogradov, V.P., Krauz, V.I., Mokeev, A.N. et al. Dynamics of the plasma current sheath in plasma focus discharges in different gases. Plasma Phys. Rep. 42, 1079–1090 (2016). https://doi.org/10.1134/S1063780X16120084

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  • DOI: https://doi.org/10.1134/S1063780X16120084

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