Upper-hybrid wave-driven Alfvenic turbulence in magnetized dusty plasmas

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)

DOI:https://doi.org/10.1103/PHYSREVE.83.037401· OSTI ID:21560090

Misra, A P ^[1]; Banerjee, S ^[2]

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1. Department of Physics, Umeaa University, SE-901 87 Umeaa (Sweden)
2. Department of Mathematics, Politecnico di Torino, 10129 Torino (Italy)

The nonlinear dynamics of coupled electrostatic upper-hybrid (UH) and Alfven waves (AWs) is revisited in a magnetized electron-ion plasma with charged dust impurities. A pair of nonlinear equations that describe the interaction of UH wave envelopes (including the relativistic electron mass increase) and the density as well as the compressional magnetic field perturbations associated with the AWs are solved numerically to show that many coherent solitary patterns can be excited and saturated due to modulational instability of unstable UH waves. The evolution of these solitary patterns is also shown to appear in the states of spatiotemporal coherence, temporal as well as spatiotemporal chaos, due to collision and fusion among the patterns in stochastic motion. Furthermore, these spatiotemporal features are demonstrated by the analysis of wavelet power spectra. It is found that a redistribution of wave energy takes place to higher harmonic modes with small wavelengths, which, in turn, results in the onset of Alfvenic turbulence in dusty magnetoplasmas. Such a scenario can occur in the vicinity of Saturn's magnetosphere as many electrostatic solitary structures have been observed there by the Cassini spacecraft.

• OSTI ID: 21560090
• Journal Information: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevE.83.037401; (c) 2011 American Institute of Physics; ISSN 1539-3755
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
CHAOS THEORY
COLLISIONS
DISTURBANCES
ELECTRONS
INTERACTIONS
IONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PLASMA
PLASMA IMPURITIES
PLASMA WAVES
RELATIVISTIC RANGE
SATURN PLANET
SPACE-TIME
SPECTRA
STOCHASTIC PROCESSES
TURBULENCE
WAVELENGTHS
CHARGED PARTICLES
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HYDROMAGNETIC WAVES
IMPURITIES
LEPTONS
MATHEMATICS
PLANETS