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- W2023831539 abstract "The strongly nonlinear axisymmetric motion of a z –pinch in an external magnetic octupole field is investigated numerically. A surface-current ideal-MHD approximation of the pinch is used, which allows a ‘contour-dynamics’ formulation of the problem. It is found that the plasma motion in the strongly nonlinear regime results in a collision between the plasma and one (or several) of the X-points. Thereafter, the X-point splits into two magnetic nulls (Y-points), which remain on the plasma surface and between which current reversal occurs. This phenomenon results in a strong force exerted on the outer parts of the plasma and directed towards the centre of the configuration. The force is able to stop the outward plasma motion under certain parameter conditions, which are found to be similar to those observed in experiments on the straight Extrap configuration." @default.
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- W2023831539 date "1990-06-01" @default.
- W2023831539 modified "2023-09-26" @default.
- W2023831539 title "A numerical study of strongly nonlinear plasma motion in a magnetic octupole field" @default.
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- W2023831539 doi "https://doi.org/10.1017/s0022377800014872" @default.
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