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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Hybrid-gyrokinetic simulations of low-n toroidal Alfvén eigenmodes using gKPSP

Y. W. Cho, +6 more

- 01 Jun 2022 -

Physics of Plasmas

TL;DR: In this paper , the authors report a benchmark study of toroidal Alfvén eigenmode (TAE) simulation using the hybrid-gyrokinetic code GyroKinetic Plasma Simulation Program (gKPSP).

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Journal ArticleDOI

Excitation of toroidal Alfvén eigenmode by barely circulating energetic electrons in low density plasmas

Tao Wang, +6 more

- 23 Mar 2023 -

Plasma Physics and Controlled Fusion

TL;DR: Zhu et al. as mentioned in this paper showed that the barely circulating energetic electrons can satisfy the resonance condition with the Toroidal Alfvén eigenmodes (TAE), mainly due to vanishing transit frequency near the phase space circulating/trapped separatrix.

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Journal ArticleDOI

Core-localized toroidal Alfvén eigenmodes in spherical tokamaks

J. A. C. Bland, +1 more

- 01 May 2023 -

Fusion Engineering and Design

TL;DR: In this article , a suite of MHD codes HELENA, MISHKA and CS_MISH are used to investigate the discrete Toroidal Alfvén eigenmodes (TAE) spectrum in high-pressure spherical Tokamak (ST) plasmas.

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Journal ArticleDOI

Mode excitation by an antenna in global gyrokinetic simulations

Noé Ohana, +9 more

TL;DR: In this article, an antenna is implemented in the global gyrokinetic code ORB5 to get a better understanding of the linear and non-linear plasma interaction of microinstabilities and associated turbulence with different specific modes.

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Journal ArticleDOI

Nonlinear excitation of geodesic acoustic mode by reversed shear Alfvén eigenmodes in non-uniform plasmas

Claude Besenius

- 17 Nov 2022 -

Journal of Plasma Physics

TL;DR: In this paper , the effects of plasma non-uniformities and kinetic dispersiveness on the spontaneous excitation of geodesic acoustic mode (GAM) by reversed shear Alfvén eigenmode (RSAE) are investigated numerically.

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References

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Finite‐Resistivity Instabilities of a Sheet Pinch

Harold P. Furth, +2 more

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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

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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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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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