High- n ideal and resistive shear Alfvén waves in tokamaks

doi:10.1016/0003-4916(85)90335-5

Open AccessJournal ArticleDOI

High- n ideal and resistive shear Alfvén waves in tokamaks

Chio-Zong Cheng, +2 more

- 15 Apr 1985 -

Annals of Physics

- Vol. 161, Iss: 1, pp 21-47

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.

Figures

Fig. 11 "Hie e i^enfunct ion of the r e s i s t i v e p e r i o d i c shear Alfven mode versus 6 for the parameters s = 0 . 2 , v = 1 0 ~ 5 , ou = 0, s = 1, •• id j2 = ( 0 . 4 4 , - 0 , 0 1 4 5 ) .

Fig. 1 The Stokes1 diagram of the potential function Q(6) in the complex 6 plane for s = 1.

Citations

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Gyrokinetic construction of wave equations at low frequencies in tokamaks

S C Chiu, +1 more

- 01 Sep 1994 -

Plasma Physics and Controlled Fusion

TL;DR: Using the gyrokinetic formalism, a conductivity tensor operator was constructed for low frequency perturbations in this article, which includes the cold Alfven waves as well as kinetic Alfven wave.

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Journal ArticleDOI

Discrete Alfvén eigenmodes in international thermonuclear experimental reactor operations with negative magnetic shear

Wang Jun, +3 more

- 15 Sep 2010 -

Chinese Physics B

TL;DR: In this paper, the authors investigated discrete magnetohydrodynamic eigenmodes in steady-state operation scenarios with negative magnetic shear in the international thermonuclear experimental reactor.

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Journal ArticleDOI

Alpha particle driven Alfvénic instabilities in ITER post-disruption plasmas

A. Lier, +5 more

- 01 Aug 2021 -

Nuclear Fusion

TL;DR: In this article, the authors investigated the ability of fusion-born alpha particles in ITER disruption simulations as a possible drive of Alfvenic instabilities and found that the radial anisotropy of the resulting alpha population provides free energy to drive Alfvenics during the quench phase of the disruption.

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Journal ArticleDOI

Gyrokinetic modelling of the Alfvén mode activity in ASDEX Upgrade with an isotropic slowing-down fast-particle distribution

F. Vannini, +9 more

- 01 Mar 2022 -

Nuclear Fusion

TL;DR: In this paper , the evolution of the Alfvén modes (AMs) is studied in a realistic ASDEX upgrade equilibrium by analyzing the results of simulations with the global, electromagnetic, gyrokinetic particle-in-cell code ORB5.

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Journal ArticleDOI

Plasma pressure effect on the multiple low-shear toroidal Alfven eigenmodes

V. S. Marchenko

- 08 Apr 2009 -

Physics of Plasmas

TL;DR: In this article, it was shown that there is a critical thermal pressure gradient at which the polarizations of the multiple low-shear toroidal Alfven eigenmodes (TAEs) are reversed.

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References

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Journal ArticleDOI

Finite‐Resistivity Instabilities of a Sheet Pinch

Harold P. Furth, +2 more

- 01 Apr 1963 -

Physics of Fluids

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

A. H. Glasser, +2 more

- 01 Jul 1975 -

Physics of Fluids

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, +1 more

- 01 Mar 1974 -

Journal of Geophysical Research

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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Journal ArticleDOI

Decay of MHD waves by phase mixing

J. Tataronis, +1 more

- 01 Jan 1973 -

European Physical Journal A

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.

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Journal ArticleDOI

Kinetic-ballooning-mode theory in general geometry

William Tang, +2 more

- 01 Nov 1980 -

Nuclear Fusion

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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