Effects of plasma turbulence on the nonlinear evolution of magnetic island in tokamak. [PDF]
Nat Commun, 2021 Magnetic islands (MIs), resulting from a magnetic field reconnection, are ubiquitous structures in magnetized plasmas. In tokamak plasmas, recent researches suggested that the interaction between an MI and ambient turbulence can be important for the ...
Choi MJ +10 more
europepmc +3 more sources
Reformation of the Electron Internal Transport Barrier with the Appearance of a Magnetic Island. [PDF]
Sci Rep, 2020 When realising future fusion reactors, their stationary burning must be maintained and the heat flux to the divertor must be reduced. This essentially requires a stationary internal transport barrier (ITB) plasma with a fast control system.
Kenmochi N +14 more
europepmc +2 more sources
Turbulence-driven vortex-flow around a magnetic island
Nuclear Fusion, 2023 We predict a new state of plasma self-organization, in the presence of magnetic islands, namely turbulence-driven island vortex-flows, which are non-axisymmetric flows.
M. Leconte, Y.W. Cho
doaj +2 more sources
Drift kinetic theory of the NTM magnetic islands in a finite beta general geometry tokamak plasma [PDF]
Nuclear Fusion, 2022 In (Imada et al 2019 Nucl. Fusion 59 046016 and references therein) a new 4D drift kinetic nonlinear theory, valid in the limit of a low beta, small inverse aspect ratio, circular cross section, toroidal geometry, to describe the plasma response to the ...
A.V. Dudkovskaia +9 more
doaj +2 more sources
Suppressing magnetic island growth by resonant magnetic perturbation [PDF]
Nuclear Fusion, 2018 The effect of externally applied resonant magnetic perturbations (RMPs) on the growth of magnetic islands is investigated based on two-fluid equations. It is found that if the local bi-normal electron fluid velocity at the resonant surface is sufficiently large, static RMPs of the same helicity and of moderate amplitude can suppress the growth of ...
Yu, Q., Günter, S., Lackner, K.
openaire +3 more sources
MMS observations of ion‐scale magnetic island in the magnetosheath turbulent plasma
Geophysical Research Letters, 2016 In this letter, first observations of ion‐scale magnetic island from the Magnetospheric Multiscale mission in the magnetosheath turbulent plasma are presented.
S. Y. Huang +28 more
doaj +2 more sources
Particle acceleration by combined diffusive shock acceleration and downstream multiple magnetic island acceleration [PDF]
, 2015 As a consequence of the evolutionary conditions [28; 29], shock waves can generate high levels of downstream vortical turbulence. Simulations [32-34] and observations [30; 31] support the idea that downstream magnetic islands (also called plasmoids or ...
G. Zank +6 more
semanticscholar +2 more sources
Dynamics of ion temperature gradient turbulence and transport with a static magnetic island [PDF]
, 2015 Understanding the interaction mechanisms between large-scale magnetohydrodynamic instabilities and small-scale drift-wave microturbulence is essential for predicting and optimizing the performance of magnetic confinement based fusion energy experiments ...
O. Izacard +3 more
semanticscholar +3 more sources
Excited ion-scale turbulence by a magnetic island in fusion plasmas. [PDF]
Sci RepThe characteristics of ion-scale turbulence in the presence of a magnetic island are numerically investigated using a gyrokinetic model in fusion plasma.
Li W +5 more
europepmc +2 more sources
Two-fluid magnetic island dynamics in slab geometry. I. Isolated islands [PDF]
Physics of Plasmas, 2005 A set of reduced, two-dimensional, two-fluid, drift-MHD (magnetohydrodynamical) equations is derived. Using these equations, a complete and fully self-consistent solution is obtained for an isolated magnetic island propagating through a slab plasma with uniform but different ion and electron fluid velocities.
Fitzpatrick, Richard +1 more
openaire +4 more sources