Dynamics of axial plasma jets in neon and argon plasma focus discharges

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Baronova, E.O.^1 ; Vovchenko, E.D.^2 ; Maiorov, A.N.^3 ; Nikulin, V.Ya.^2 ; Silin, P.V.^3 ; Stepanenko, A.M.^1 ; Suslin, S.V.^1 ; Vikhrev, V.V.^1

National Research Center, Kurchatov Institute, Kurchatov Square 1, Moscow

123182, Russia^1

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe Shosse 31, Moscow

115409, Russia^2

Lebedev Physical Institute, Russian Academy of Sciences, Leninsky Avenue 53, Moscow

119991, Russia^3

关键词: Argon plasmas;    Current sheaths;    MHD models;    Neon plasma;    Plasma focus;    Shearing interferometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012160/pdf
DOI  :  10.1088/1742-6596/653/1/012160

来源: IOP

【 摘 要 】

Axial plasma jets at the final stage of plasma focus discharge filled by neon or argon were studied by the method of shearing interferometry. It was found that neon plasma is more stable than argon one and jets in neon are stronger than in argon. The velocity of current sheath, taken from experiment, is Vsh= (2-3) × 106cm/s, while the velocity of cumulative jet is Vj = (3-4) × 107cm/s. These features are supported by theoretical interpretation given in the frame of 2D MHD model.