Results 21 to 30 of about 1,047,530 (303)
Kinetic simulations of the coupling between current instabilities and reconnection in thin current sheets [PDF]
Nonlinear Processes in Geophysics, 2000 We investigate the coupling between current and tearing instability modes of a thin current sheet using the particle code GISMO. We identify pure tearing modes (kx≠ 0), instabilities in the current flow direction (ky≠ 0) and general 3D reconnection modes
T. Wiegelmann, J. Büchner
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Tearing mode stability in 1D and 2D [PDF]
Computer Physics Communications, 1981 Abstract A stability code for tearing modes in 1D and 2D straight equilibria in the tokamak scaling has been developed. It finds the lowest eigenvalues of a Hermitian problem which is obtained analytically by a reduction of the full problem. The main advantage is the powerful handling of equilibria with several resonant surfaces and displaying ...
Kerner, W., Tasso, H.
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Nonlinear evolution of the resistive tearing mode [PDF]
The Physics of Fluids, 1984 The nonlinear behavior of the tearing instability is investigated with numerical solutions of the resistive, incompressible, magnetohydrodynamic equations. Simulations have been completed for values of the Lundquist number S from 102 to 106 and wavelength parameter α=2πa/λ from 0.042 to 0.5.
Steinolfson, R. S., van Hoven, G.
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Stability of short wavelength tearing and twisting modes [PDF]
, 1998 The stability and mutual interaction of tearing and twisting modes in a torus is governed by matrices that generalize the well-known {Delta}{prime} stability index.
Waelbroeck, F.L.
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Control of Neoclassical Tearing Modes by Sawtooth Control [PDF]
Physical Review Letters, 2002 The onset of a neoclassical tearing mode (NTM) depends on the existence of a large enough seed island. It is shown in the Joint European Torus that NTMs can be readily destabilized by long-period sawteeth, such as obtained by sawtooth stabilization from ion-cyclotron heating or current drive. This has important implications for burning plasma scenarios,
Sauter, O. +19 more
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Nonlinear saturation of resistive tearing modes in a cylindrical tokamak with and without solving the dynamics [PDF]
We show that the saturation of resistive tearing modes in a cylindrical tokamak, as well as the corresponding island width, can be directly calculated with a magnetohydrodynamics (MHD) equilibrium code without solving the dynamics and without considering
Loizu, Joaquim, Bonfiglio, Daniele
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Tearing modes in a plasma with magnetic braiding [PDF]
, 1979 We examine certain linear and nonlinear properties of macroscopic tearing modes driven by anomalous electron viscosity effects associated with magnetic braiding.
Rutherford, P. H. +5 more
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Neoclassical Tearing Modes [PDF]
Fusion Science and Technology, 2004 Tearing modes often limit the performance of tokamak plasmas, because the magnetic islands which they generate lead to a loss of confinement, or even a disruption.
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Tearing mode analysis in electron magnetohydrodynamics with pressure gradient
AIP Advances, 2020 A two-dimensional three-component (2D/3C) electron magnetohydrodynamic (EMHD) model is implemented to investigate the linear behavior of collisionless tearing modes in slab geometry.
Wenping Guo +3 more
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RESISTIVE MAGNETOHYDRODYNAMICS SIMULATIONS OF THE IDEAL TEARING MODE [PDF]
The Astrophysical Journal, 2015 We study the linear and nonlinear evolution of the tearing instability on thin current sheets by means of two-dimensional numerical simulations, within the framework of compressible, resistive magnetohydrodynamics. In particular we analyze the behavior of current sheets whose inverse aspect ratio scales with the Lundquist number $S$ as $S^{-1/3}$. This
LANDI, SIMONE +4 more
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