Excitation of kinetic Alfvén waves in the ion-Bernstein wave heating of a plasma

Sharma, Anamika; Tripathi, V. K.

doi:10.1063/1.866887

Cited by 12 publications

(11 citation statements)

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“…Recently, the works further point out that the KAWs can parametrically excite the convective cell [ Pokhotelov et al , 2003; Onishchenko et al , 2004]. On the other hand, the KAWs can also be excited by other modes, such as by the whistler wave [ Chen , 1977; Sharma et al , 1986], the lower hybrid wave [ Shukla and Mamedow , 1978], the high‐frequency radio wave [ Papadopoulos et al , 1982], the ion cyclotron wave [ Yu et al , 1984; Patel et al , 1985], the ion Bernstein wave [ Sharma and Tripathi , 1988], the ordinary electromagnetic wave [ Triphthi and Sharma , 1988], the higher hybrid wave [ Yukhimuk et al , 1998], the Langmuir wave [ Voitenko et al , 2003], and MHD waves [ Voitenko and Goossens , 2002, 2005a, 2005b; Fedun et al , 2004].…”

Section: Introductionmentioning

confidence: 99%

On nonlinear decay of kinetic Alfvén waves and application to some processes in space plasmas

Zhao

2010

J. Geophys. Res.

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[1] This paper considers the nonlinear decay of the kinetic Alfvén waves (KAW) in the space plasmas. By using a two-fluid model, we obtain a nonlinear equation to investigate the resonant interaction among three kinetic Alfvén waves. It is shown that the parametric instability of the kinetic Alfvén wave becomes important when its perpendicular wavelength is the order of the ion acoustic gyroradius or the electron inertial length. We give a detailed discussion for the KAW decay in the plasma inertial range and show that (1) the reverse decay of the kinetic Alfvén wave is stronger than its parallel decay for the arbitrary wavelength range; (2) the reverse decay is lager than the parallel decay for small angles of two perpendicular wave vectors of the decay waves, and these two decays are zero for large angles; (3) both growth rates depend on the choice of the wave number range of the decay waves; and (4) there exists two forbidden regions for the KAW decay. In this paper, we also discuss the nonlinear decay of the kinetic Alfvén waves in the auroral zone and show that the parametric instability can occur there and may play an important role in forming two reverse electron streaming fluxes in the electron acceleration region.

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Section: Introductionmentioning

confidence: 99%

On nonlinear decay of kinetic Alfvén waves and application to some processes in space plasmas

Zhao

2010

J. Geophys. Res.

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“…We apply the results of our calculations to investigate a new way of KAW generation in the magnetosphere. Investigations of parametric processes in a magnetized plasma are of particular theoretical and practical interest, and many articles have been devoted to this problem (Shukla and Mamedov 1978;Murtaza and Shukla 1984;Patel et al 1985;Sharma and Tripathi 1988;Kotsarenko et al , 1994Yukhimuk and Yukhimuk 1994). We show that in those magnetosphere regions where there exists a high level of UHWs, the decay UHW→UHW+KAW can take place, resulting in KAW generation.…”

Section: Introductionmentioning

confidence: 66%

“…Excitation of KAWs by linear mode conversion (Hasegawa and Chen 1976) and by nonlinear decay of lower-hybrid (Shukla and Mamedov 1978), ion-cyclotron (Patel et al 1985) and ion-Bernstein (Sharma and Tripathi 1988) waves has been investigated. In the present paper we examine a new channel for KAW generation in a plasma in the presence of upper-hybrid waves (UHWs).…”

Section: Introductionmentioning

confidence: 99%

Generation of kinetic Alfvén waves by upper-hybrid pump waves

Yukhimuk

Voitenko

Fedun³

et al. 1998

J. Plasma Phys.

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The nonlinear mechanism for kinetic-Alfvén-wave (KAW) excitation by upper-hybrid waves (UHWs) is discussed. Taking into account perpendicular dispersion of KAWs, caused by effects of finite ion Larmor radius and electron inertia, we examine a new channel for UHW decay, in which a pump UHW decays into another UHW and an ultralow-frequency wave, KAW: UHW→KAW+UHW. A nonlinear dispersion relation is derived, and the growth rate of the parametric decay instability is calculated for a pump UHW propagating at an arbitrary angle to the background magnetic field. We find that the resulting KAWs often have a two-peaked spectrum with different perpendicular dispersions. Using satellite observations, the analytical results are applied to show that the considered process represents an effective mechanism for KAW generation and the consequent spreading of the UHW spectrum in the Earth's magnetosphere and solar corona.

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“…As regards comets an elegant 3 step process involving KAWs has been proposed to describe how the solar wind protons are heated by low frequency MHD waves that are driven unstable by ion beams on ring like distributions (Sharma and Tripathi, 1988). And such Alfvenic turbulence has been detected by the ICE spacecraft at the comet Giacobini-Zinner (Tsurutani and Smith, 1986;Gosling et al, 1986).…”

Section: Introductionmentioning

confidence: 99%