High- n ideal and resistive shear Alfvén waves in tokamaks
TLDR
In this paper, the ideal and resistive MHD equations for the shear Alfven waves are studied in a low-β toroidal model by employing the high-n ballooning formalism.About:
This article is published in Annals of Physics.The article was published on 1985-04-15 and is currently open access. It has received 450 citations till now. The article focuses on the topics: Resistive touchscreen.read more
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Hybrid magnetohydrodynamic‐gyrokinetic simulation of toroidal Alfvén modes
TL;DR: In this paper, a three-dimensional hybrid fluid-particle initial value code for the numerical simulation of the linear and nonlinear evolution of toroidal modes of the shear-Alfven branch has been developed.
Journal ArticleDOI
A Fluid-kinetic Hybrid Electron Model for Electromagnetic Simulations
Zhihong Lin,Liu Chen +1 more
TL;DR: In this paper, a fluid-kinetic hybrid electron model for electromagnetic simulations of finite-β plasmas is developed based on an expansion of the electron response using the electron-ion mass ratio as a small parameter.
Journal ArticleDOI
Electron fishbones: theory and experimental evidence
Fulvio Zonca,P. Buratti,A. Cardinali,Liu Chen,Liu Chen,J.-Q. Dong,Y.-X. Long,A.V. Milovanov,A.V. Milovanov,A.V. Milovanov,Francesco Romanelli,P. Smeulders,Lei Wang,Z.-T. Wang,C. Castaldo,R. Cesario,E. Giovannozzi,M. Marinucci,V. Pericoli Ridolfini +18 more
TL;DR: In this article, the processes underlying the excitation of fishbone-like internal kink instabilities driven by supra-thermal electrons generated experimentally by different means: electron cyclotron resonance heating (ECRH) and by lower hybrid (LH) power injection.
Journal ArticleDOI
Excitation of high-n toroidicity-induced shear Alfvén eigenmodes by energetic particles and fusion alpha particles in tokamaks
Guoyong Fu,Chio-Zong Cheng +1 more
TL;DR: In this article, the stability of high-n toroidicity-induced shear Alfven eigenmodes (TAE) in the presence of fusion alpha particles or energetic ions in tokamaks is investigated.
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Theory of Alfvén eigenmodes in shear reversed plasmas
TL;DR: In this paper, the authors present a theory that employs two complementary mechanisms for establishing Alfven cascades: (1) a nonstandard adiabatic response of energetic particles with large orbits and (2) toroidal magnetohydrodynamic effects that are second-order in inverse aspect ratio.
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Finite‐Resistivity Instabilities of a Sheet Pinch
TL;DR: In this paper, the stability of a plane current layer is analyzed in the hydromagnetic approximation, allowing for finite isotropic resistivity, and the effect of a small layer curvature is simulated by a gravitational field.
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Resistive instabilities in general toroidal plasma configurations
TL;DR: In this article, the Mercier criterion for the stability of the ideal magnetohydrodynamic interchange mode is derived, the generalization of the earlier stability criterion for resistive interchange mode was obtained, and a relation between the two was noted.
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A theory of long‐period magnetic pulsations: 2. Impulse excitation of surface eigenmode
Liu Chen,Akira Hasegawa +1 more
TL;DR: In this paper, a wave equation that shows a coupling between a surface wave and a shear Alfven wave is derived, and a theory of long-period magnetic pulsations (Pc 3 to Pc 5) is presented as an initial value problem to explain impulse-excited pulsations.
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Decay of MHD waves by phase mixing
J. Tataronis,W. Grossmann +1 more
TL;DR: In this article, the authors examined the dispersion relation for plasmas with non-uniform profiles and compared the results with those of a sharp boundary model, showing that the frequency of the waves is a complex quantity having a real and imaginary part.
Journal ArticleDOI
Kinetic-ballooning-mode theory in general geometry
TL;DR: In this article, a systematic procedure for studying the influence of kinetic effects on the stability of MHD ballooning modes is presented, which includes effects due to finite gyroradius, trapped particles, and wave-particle resonances.
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