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Turbulence Driven Magnetic Reconnection Causing Long-wavelength Magnetic Islands
Turbulence Driven Magnetic Reconnection Causing Long-wavelength Magnetic Islandsopenaire
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Plasma physics of magnetic island coalescence during magnetic reconnection
Journal of Geophysical Research: Space Physics, 2014AbstractA large‐scale two‐dimensional electromagnetic particle‐in‐cell simulation was employed to study the magnetic island coalescence/merging process during magnetic reconnection with guide field. The merged island after coalescence is characterized by strong core field and plasma density dip at the island center.
Meng Zhou +4 more
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Effects of magnetic island on profile formation in flux-driven ITG turbulence
Physics of Plasmas, 2022Full-f gyrokinetic simulations of ion temperature gradient (ITG) turbulence in the presence of a magnetic island are performed. A newly developed method for evaluating the flux-surface average is implemented to treat adiabatic electrons inside the ...
Miki Muto, K. Imadera, Y. Kishimoto
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, 2020
Stabilization of a model magnetic island in tokamaks by localized electron cyclotron current drive (ECCD) has been studied using a fluid-kinetic hybrid model coupled with ray tracing and Fokker−Planck equations. Even though a gyrokinetic toroidal code at
Jingchun Li +5 more
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Stabilization of a model magnetic island in tokamaks by localized electron cyclotron current drive (ECCD) has been studied using a fluid-kinetic hybrid model coupled with ray tracing and Fokker−Planck equations. Even though a gyrokinetic toroidal code at
Jingchun Li +5 more
semanticscholar +1 more source
Self-sustained magnetic islands
Physics of Plasmas, 1996Numerical simulations of a single magnetic island evolution are presented in the regime where the island width is smaller than an ion Larmor radius. It is shown that the island rotation is controlled by particle diffusion due to collisions or a background of microturbulence. More precisely, for vanishing density gradient, the sign of rotation frequency
J. H. Chatenet, J. F. Luciani, X. Garbet
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The Physics of Fluids, 1984
The response of a finite conductivity plasma to resonant magnetic perturbations is studied. The equations, which are derived for the time development of magnetic islands, help one to interpret the singular currents which occur under the assumption of perfect plasma conductivity. The relation to the Rutherford regime of resistive instabilities is given.
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The response of a finite conductivity plasma to resonant magnetic perturbations is studied. The equations, which are derived for the time development of magnetic islands, help one to interpret the singular currents which occur under the assumption of perfect plasma conductivity. The relation to the Rutherford regime of resistive instabilities is given.
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Natural Velocity of Magnetic Islands
Physical Review Letters, 2005The phase velocity of magnetic islands is calculated in the semicollisional regime with cold ions. Two solution branches arise, corresponding to islands propagating with the ions and with the electrons. For the ion branch the phase velocity and the polarization current are small.
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