Nonlinear lower hybrid vortices

Jovanović, D.; Vranjes, Jovo; Weiland, Jan

doi:10.1103/physreve.53.1051

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Among numerous numerical experiments indicating the role of plasma vortices in the strong plasma turbulence and for the related anomalous particle and energy transport, we mention here only the classical works of the group from the University of Texas in Austin on the vortices in resistively driven driftwave, 11 ion tempera-ture gradient 12 and velocity shear driven turbulence. 13 Vortices in plasmas have been studied analytically both in the form of electrostatic disturbances corresponding to drift waves, [14][15][16][17][18] electromagnetic shear-Alfvèn-type perturbations [19][20][21] and also including microscopic effects beyond the single fluid MHD formulation, [22][23][24][25] Helicon ͑EMHD͒ vortex solutions of the type investigated in detail in the present paper were introduced in Ref. 5.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional electron-magnetohydrodynamic nonlinear structures

Jovanović

Пегораро

2000

Physics of Plasmas

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Electron thermal effect on linear and nonlinear coupled Shukla-Varma and convective cell modes in dustcontaminated magnetoplasma Two-dimensional coherent electromagnetic structures involving the dynamics of the electron population in a quasineutral plasma with immobile ions are described. These structures consist of small scale magnetic vortices that propagate at a constant velocity. The dispersion relations of dipolar and tripolar vortices and of dipolar vortices and of vortex chains are given. The magnetic field of these vortices is three-dimensional. In addition, stationary quadrupolar vortices are described that are formed in the neighborhood of an X-point of the background configuration.

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Section: Introductionmentioning

confidence: 99%

Two-dimensional electron-magnetohydrodynamic nonlinear structures

Jovanović

Пегораро

2000

Physics of Plasmas

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“…The lower-hybrid drift wave is driven by a transverse current in a nonuniform plasma, which has been shown to have wide applications in laboratory [1][2][3] and space plasmas [4][5][6]. During the wave propagation process, strong nonlinear phenomena may occur such as wave packet formation and wave collapse with large-density perturbations, which in turn modifies the character of the nonlinear structure [7,8]. In this context, nonlinear structures of the lower-hybrid drift wave have been observed.…”

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confidence: 99%

Nonlinear lower-hybrid drift soliton in multi-component plasmas

Huang

Zhang

et al. 2011

Phys. Scr.

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We investigate the nonlinear structure of the lower-hybrid drift wave in multi-component plasmas. The Korteweg-de Vries (KdV) equation is derived and a localized soliton is found. Depending on the plasma parameters, the amplitude of the soliton can vary monotonically or nonmonotonically with the impurity ion content. Interestingly, the amplitude can even become negative and accordingly the soliton collapses from original humps to a cavity. We show the conditions that determine the monotonicity of the amplitude with the impurity ion content and the collapse of the soliton. In addition, we show that the monotonicity of the width of the soliton with respect to the impurity ion content is determined solely by the difference in the electron temperature gradient and electron density gradient. Our results highlight the effect of the impurity of ions on the structure of the lower-hybrid drift soliton.

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Electrostatic chains driven by nonuniform lower hybrid pump

Vranjes¹,

Jovanović²

1997

Phys. Scr.

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We study the parametric interaction of a nonuniform long-wavelength lower hybrid (LH) wave propagating almost perpendicularly to the magnetic field lines, with low frequency density perturbations. Neglecting perturbations of the strong LH wave acting as a pump, we show that for a specific profile of its amplitude, a LH pump can excite electrostatic vortex chains propagating perpendicularly both to the magnetic field and the direction of the pump gradient.

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Nonlinear lower hybrid vortices

Cited by 4 publications

References 19 publications

Two-dimensional electron-magnetohydrodynamic nonlinear structures

Two-dimensional electron-magnetohydrodynamic nonlinear structures

Nonlinear lower-hybrid drift soliton in multi-component plasmas

Electrostatic chains driven by nonuniform lower hybrid pump

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