Parametrically Unstable Alfven-cyclotron Waves and Wave--Particle Interactions in the Solar Corona and Solar Wind

Journal Article · Sun Apr 26 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3137931· OSTI ID:21308640

Maneva, Y G; Marsch, E ^[1]; Araneda, J A ^[2]

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1. Max-Planck-Institut fuer Sonnensystemforschung, D-37191 Katlenburg-Lindau (Germany)
2. Departamento de Fisica, Facultad de Ciencias Fisicas y Matematicas, Universidad de Conception, Conception (Chile)

We consider the parametric instabilities of large-amplitude Alfven/ion-cyclotron waves and the consequent wave-particle interactions, and discuss their importance for modelling the evolution of ion velocity distribution functions in the tenuous and collisionless plasma of a coronal hole and the fast solar wind. We perform 1D hybrid simulations to study the nonlinear evolution of the parametric instabilities by analyzing the simulation results in terms of microinstabilities and discussing the influence of both Landau and cyclotron resonances on the evolution of the ion distributions. We demonstrate the origin of a relative drift between the protons and alpha particles, show the related anisotropic ion heating and follow the simultaneous proton beam formation. Finally, we focus on the development and evolution of both electromagnetic and acoustic micro-turbulence and present indications for an inverse energy cascade from shorter to longer wavelengths.

• OSTI ID: 21308640
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1121; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
ALPHA PARTICLES
ANISOTROPY
COLLISIONLESS PLASMA
COMPUTERIZED SIMULATION
CYCLOTRON RESONANCE
DISTRIBUTION FUNCTIONS
ION PLASMA WAVES
IONS
NONLINEAR PROBLEMS
PARAMETRIC INSTABILITIES
PLASMA SIMULATION
PROTONS
SOLAR CORONA
SOLAR WIND
TURBULENCE