Interaction between lower hybrid waves and energetic ions in a tokamak system

Ziebell, L. F.

doi:10.1088/0741-3335/42/3/312

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…When the threshold condition is satisfied a quasilinear formalism can be derived and employed to describe the stochastic diffusion which occurs in velocity space [2]. Using quasilinear analysis, significant waveparticle interaction between energetic ions and lower hybrid (LH) waves has been indeed demonstrated to occur [6,7].…”

Section: Introductionmentioning

confidence: 99%

Stochastic diffusion of energetic ions due to incoherent lower hybrid waves

Tozawa¹,

Ziebell²

2003

Braz. J. Phys.

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In the present paper we discuss stochastic diffusion of energetic ions by a set of lower hybrid waves with frequencies close to each other and random phases which change along the time evolution of the system. We obtain efficient long term diffusion in velocity space, which is more representative of the diffusion produced by a continuous wave packet than the diffusion produced by a set of waves with random phases which are constant along the time evolution.

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Section: Introductionmentioning

confidence: 99%

Stochastic diffusion of energetic ions due to incoherent lower hybrid waves

Tozawa¹,

Ziebell²

2003

Braz. J. Phys.

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Study of the Absorption Rate of Lower Hybrid Wave Energy by High Energetic Ions in Tokamak

Minghe

Zhang

et al. 2015

J Fusion Energ

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A non-local synergism between electron cyclotron waves and lower hybrid waves induced by transport

Rosa

Ziebell

2001

Plasma Phys. Control. Fusion

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In this paper, we study the effects of particle radial transport on the electron cyclotron (EC) and lower hybrid (LH) power deposition profiles and current drive efficiency. We consider a tokamak plasma under the combined action of LH waves, EC waves, collisions and spatial transport of electrons across the magnetic surfaces, and consider situations in which the spatial location of the peaks of power deposition profiles for EC and LH waves is not the same. Our results, found from numerical solution of the diffusion equation, indicate significant modification in the LH power deposition profile and show evidence of a non-local synergism between LH and EC waves when transport is present, leading to strong enhancing of RF current drive efficiency.

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Interaction between lower hybrid waves and energetic ions in a tokamak system

Cited by 4 publications

References 22 publications

Stochastic diffusion of energetic ions due to incoherent lower hybrid waves

Stochastic diffusion of energetic ions due to incoherent lower hybrid waves

Study of the Absorption Rate of Lower Hybrid Wave Energy by High Energetic Ions in Tokamak

A non-local synergism between electron cyclotron waves and lower hybrid waves induced by transport

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