Nonlinear electrostatic waves in a magnetized dusty plasma with two-temperature ions

Journal Article · Sun Sep 07 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2997071· OSTI ID:21251273

Maharaj, S K ^[1]; Bharuthram, R ^[2]; Pillay, S R ^[3]; Singh, S V; Reddy, R V; Lakhina, G S ^[4]

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1. Hermanus Magnetic Observatory, P.O. Box 32, Hermanus 7200 (South Africa)
2. University of the Western Cape, Modderdam Road, Bellville 7530 (South Africa)
3. University of KwaZulu-Natal, Private Bag X54001, Durban 4000 (South Africa)
4. Indian Institute of Geomagnetism, New Panvel, Navi Mumbai-410218 (India)

Nonlinear low frequency electrostatic waves which arise from the coupling between two linear modes, viz., the dust-acoustic and dust-cyclotron waves, are studied in a magnetized dusty plasma comprising Boltzmann electrons, a negatively charged warm dust fluid, and two ion species of different temperatures with both species having isothermal Boltzmann distributions. The fluid equations for the dust are combined with the quasineutrality condition to obtain a single equation which governs the nonlinear evolution of the electric field for wave propagation oblique to an external magnetic field. The numerically obtained solutions for the electric field are found to have sinusoidal waveforms for small values of the initial driver electric field amplitudes and Mach numbers, whereas, spiky structures are found to be supported for larger values. Furthermore, the periods of the waveforms are found to depend on various plasma parameters such as hot and cool ion number densities and temperatures, dust drift speed and dust temperature.

• OSTI ID: 21251273
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1041; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONS
COUPLING
DUSTS
ELECTRIC FIELDS
ELECTRONS
ION DENSITY
ION TEMPERATURE
IONS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
PLASMA
PLASMA CONFINEMENT
PLASMA WAVES
VELOCITY
WAVE FORMS
WAVE PROPAGATION