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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Stability of the global Alfvén eigenmode in the presence of fusion alpha particles in an ignited tokamak plasma
Guoyong Fu,J. W. Van Dam +1 more
TL;DR: In this article, the stability of global Alfven eigenmodes was investigated in the presence of super-Alfvenic energetic particles, such as fusion product alpha particles in an ignited deuterium-tritium tokamak plasma.
Journal ArticleDOI
Expansion of parameter space for toroidal Alfven eigenmode experiments in TFTR
K. L. Wong,James R. Wilson,Z. Chang,Guoyong Fu,E.D. Fredrickson,Gregory W. Hammett,C.E. Bush,C. K. Phillips,J.A. Snipes,G. Taylor +9 more
TL;DR: The Toroidal Alfven eigenmodes (TAE) in the Tokamak Fusion Test Reactor (TFTR) at magnetic fields above 10 kG were investigated in this article.
Journal ArticleDOI
Nonlinear response of driven systems in weak turbulence theory
TL;DR: In this paper, a method for predicting the saturation levels and particle transport in weakly unstable systems with a discrete number of modes is presented, where conditions are established for either steady state or pulsating responses when several modes are excited for cases where there is and there is not resonance overlap.
Journal ArticleDOI
JET (3He)–D scenarios relying on RF heating: survey of selected recent experiments
D. Van Eester,E. Lerche,Y. Andrew,T. M. Biewer,A. Casati,Kristel Crombé,E. de la Luna,Göran Ericsson,R. C. Felton,L. Giacomelli,C. Giroud,N. C. Hawkes,Carl Hellesen,Anders Hjalmarsson,E. Joffrin,Jan Källne,Vasily Kiptily,P. J. Lomas,P. Mantica,Alessandro Marinoni,M.-L. Mayoral,J. Ongena,Maria Ester Puiatti,M. Santala,S. E. Sharapov,M. Valisa,Jet-Efda Contributors +26 more
TL;DR: In this paper, the authors discuss the RF heating efficiency theoretically expected in such plasmas, covering both relevant aspects of wave and particle dynamics, and give a concise summary of the main conclusions drawn from recent experiments that were either focusing on studying RF heating physics aspects or that were adopting RF heating as a tool to study plasma behavior.
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Effects of trapped particle dynamics on the structures of a low-frequency shear Alfvén continuous spectrum
TL;DR: In this article, the structures of the low-frequency shear in the continuous spectrum due to resonant waveparticle interactions with magnetically trapped metal-particle interkamaks are derived.
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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.
Journal ArticleDOI
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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