Characteristics of Nonlinear Dust Acoustic Waves in Planetary Ring

Details Characteristics of Nonlinear Dust Acoustic Waves in Planetary Ring Characteristics of Nonlinear Dust Acoustic Waves in Planetary Ring

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..649..337k&link_type=abstract

DUSTY PLASMAS IN THE NEW MILLENNIUM: Third Conference on the Physics of Dusty Plasmas. AIP Conference Proceedings, Volume 649,

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Dusty Or Complex Plasmas, Plasma Crystals, Nonlinear Phenomena: Waves, Wave Propagation, And Other Interactions, Planetary Rings, Saturn

Scientific paper

Nonlinear properties of small amplitude dust acoustic waves, incorporating dust charge variation, ion inertial effect and dust drift effect have been studied. A Korteweg-de Vries (KdV) equation with positive or negative damping term depending on the wave velocity and the ring parameters governs the nonlinear dust acoustic wave. Numerical investigations reveal that in Saturn's F, G and E rings, dust acoustic solitary wave admits both negative and positive potentials. Instability arises from the available free energy of drift motion (V0) of dust grains only for the wave with wave velocity λ < V0.

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