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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Destabilization of TAE modes using ICRH in ASDEX Upgrade
D. N. Borba,Garrard Conway,Sibylle Günter,G. T. A. Huysmans,S. Klose,M. Maraschek,A. Mück,I. Nunes,S. D. Pinches,F. Serra +9 more
TL;DR: In this paper, the toroidicity-induced Alfv?n eigenmodes (TAEs) are destabilized in ASDEX upgrade using ion cyclotron resonant heating (ICRH).
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A Real-Time Synchronous Detector for the TAE Antenna Diagnostic at JET
TL;DR: This paper revisits the problem of estimating the I-Q characteristics from a known non-stationary frequency mode, with a resonant-like phase response, embedded in a digital signal and proposes a non- Stationary linear model as a viable alternative to hardware synchronous detectors.
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Analysis of damping rate measurements of toroidal Alfvén eigenmodes on JET as a function of n: part I
TL;DR: In this article, the damping rate of medium-n modes has a dependence on the background plasma parameters that is distinctively different from that of low n modes, and the significance of the span of the q profile is shown experimentally for the first time.
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Dynamics of reversed shear Alfvén eigenmode and energetic particles during current ramp-up
TL;DR: In this article, a series of weakly reversed shear equilibria representing time slices of long timescale MHD equilibrium evolution is considered, where the self-consistent RSAE-EP resonant interactions on the short timescale are analyzed in detail.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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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