Electromagnetic cyclotron instabilities in bi-Kappa distributed plasmas: a quasilinear approach

M. Lazar, P.H. Yoon, B. Eliasson

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Anisotropic bi-Kappa distributed plasmas, as encountered in the solar wind and planetary magnetospheres,are susceptible to a variety of kinetic instabilities including the cyclotron instabilities driven by an excess ofperpendicular temperature T⊥ > T∥ (where ∥, ⊥ denote directions relative to the mean magnetic field). Theseinstabilities have been extensively investigated in the past, mainly limiting to a linear stability analysis. Abouttheir quasilinear (weakly nonlinear) development some insights have been revealed by numerical simulationsusing PIC and Vlasov solvers. This paper presents a self-consistent analytical approach, which provides forboth the electron and proton cyclotron instabilities an extended picture of the quasilinear time evolution ofthe anisotropic temperatures as well as the wave energy densities. 
LanguageEnglish
Article number042110
Number of pages11
JournalPhysics of Plasmas
Volume24
Issue number4
DOIs
Publication statusPublished - 10 Apr 2017

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cyclotrons
electromagnetism
planetary magnetospheres
magnetospheres
solar wind
flux density
temperature
protons
kinetics
magnetic fields
electrons

Keywords

  • distributed plasmas
  • solar wind
  • magnetosphere

Cite this

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abstract = "Anisotropic bi-Kappa distributed plasmas, as encountered in the solar wind and planetary magnetospheres,are susceptible to a variety of kinetic instabilities including the cyclotron instabilities driven by an excess ofperpendicular temperature T⊥ > T∥ (where ∥, ⊥ denote directions relative to the mean magnetic field). Theseinstabilities have been extensively investigated in the past, mainly limiting to a linear stability analysis. Abouttheir quasilinear (weakly nonlinear) development some insights have been revealed by numerical simulationsusing PIC and Vlasov solvers. This paper presents a self-consistent analytical approach, which provides forboth the electron and proton cyclotron instabilities an extended picture of the quasilinear time evolution ofthe anisotropic temperatures as well as the wave energy densities. ",
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Electromagnetic cyclotron instabilities in bi-Kappa distributed plasmas : a quasilinear approach. / Lazar, M.; Yoon, P.H.; Eliasson, B.

In: Physics of Plasmas, Vol. 24, No. 4, 042110, 10.04.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electromagnetic cyclotron instabilities in bi-Kappa distributed plasmas

T2 - Physics of Plasmas

AU - Lazar, M.

AU - Yoon, P.H.

AU - Eliasson, B.

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AB - Anisotropic bi-Kappa distributed plasmas, as encountered in the solar wind and planetary magnetospheres,are susceptible to a variety of kinetic instabilities including the cyclotron instabilities driven by an excess ofperpendicular temperature T⊥ > T∥ (where ∥, ⊥ denote directions relative to the mean magnetic field). Theseinstabilities have been extensively investigated in the past, mainly limiting to a linear stability analysis. Abouttheir quasilinear (weakly nonlinear) development some insights have been revealed by numerical simulationsusing PIC and Vlasov solvers. This paper presents a self-consistent analytical approach, which provides forboth the electron and proton cyclotron instabilities an extended picture of the quasilinear time evolution ofthe anisotropic temperatures as well as the wave energy densities. 

KW - distributed plasmas

KW - solar wind

KW - magnetosphere

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