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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High-frequency fishbones at JET: theoretical interpretation of experimental observations
Fulvio Zonca,Liu Chen,Liu Chen,A. Botrugno,P. Buratti,A. Cardinali,R. Cesario,V. Pericoli Ridolfini,Jet-Efda Contributors +8 more
TL;DR: The existence of fishbone fluctuations at frequencies comparable to those of geodesic acoustic modes and beta induced Alfven eigenmodes (BAE) has been demonstrated theoretically in a recent work as discussed by the authors.
Journal ArticleDOI
Investigation of high-n TAE modes excited by minority-ion cyclotron heating in JT-60U
M. Saigusa,Haruyuki Kimura,S. Moriyama,Yuzuru Neyatani,T. Fujii,Yoshihiko Koide,Takashi Kondoh,Masayasu Sato,M. Nemoto,Yutaka Kamada +9 more
TL;DR: Toroidicity-induced Alfven eigen (TAE) modes were observed during minority ion cyclotron resonance heating (ICRH) in the JT-60U.
Journal ArticleDOI
Global particle-in-cell simulations of fast-particle effects on shear Alfvén waves
TL;DR: In this article, a self-consistent global linear gyrokinetic particle-in-cell simulation of shear Alfven waves destabilized by fast particles in tokamak geometry is presented.
Journal ArticleDOI
Benchmark of gyrokinetic, kinetic MHD and gyrofluid codes for the linear calculation of fast particle driven TAE dynamics
Axel Könies,Sergio Briguglio,Nikolai Gorelenkov,T. Feher,M. Isaev,Ph. Lauber,Alexey Mishchenko,Donald A. Spong,Yasushi Todo,W. A. Cooper,Roman Hatzky,R. Kleiber,M. Borchardt,Gregorio Vlad,Alessandro Biancalani,Alberto Bottino,Itpa Ep Tg +16 more
TL;DR: In this paper, a linear benchmark for a toroidal Alfven eigenmode (TAE) with 11 participating codes with a broad variation in the physical as well as the numerical models is presented.
Journal ArticleDOI
Bounce precession fishbones in the national spherical torus experiment
TL;DR: Ono et al. as mentioned in this paper observed bounce precession frequency fishbone modes on a low aspect ratio tokamak, the national spherical torus experiment (Ono M. et al., 2000 Nucl. Fusion 40 557).
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.
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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.
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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