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3 results on '"K Annou"'

1. Formation Of Voids In Dusty Lorentzian Plasma

Author

S. Bahamida, K. Annou, R. Annou, José Tito Mendonça, David P. Resendes, and Padma K. Shukla

Subjects
Physics, Spectral index, Physics::Plasma Physics, Plasma instability, Dust particles, Plasma diagnostics, Astrophysics::Cosmology and Extragalactic Astrophysics, Plasma, Atomic physics, Vortex, Ion, Plasma density
Abstract

We study the possibility of formation of voids in y Lorentzian plasmas containing of dust particles obeying to vortex‐like velocity distribution. The size of the void is found to be ion spectral index dependent.

Published
2008
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2. Dromion Solution For DAW In Dusty Plasma

Author

K. Annou, S. Bahamida, R. Annou, José Tito Mendonça, David P. Resendes, and Padma K. Shukla

Subjects
Physics, Dusty plasma, Astrophysics::Cosmology and Extragalactic Astrophysics, Acoustic wave, Plasma, Magnetization, Nonlinear Sciences::Exactly Solvable and Integrable Systems, Classical mechanics, Physics::Plasma Physics, Plasma instability, Quantum electrodynamics, Astrophysics::Earth and Planetary Astrophysics, Magnetohydrodynamics, Nonlinear evolution, Nonlinear Sciences::Pattern Formation and Solitons, Sound wave
Abstract

The nonlinear evolution of dust acoustic wave in magnetized dusty plasmas is shown to obey the Davey‐Stewartson I equation, which admits the so called dromion solutions.

Published
2008
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3. Effect Of Grain Size-Distribution And Nonthermal Ion Distribution On Dust Acoustic Solitons

Author

K. Annou and R. Annou

Subjects
Physics, Astrophysics::Cosmology and Extragalactic Astrophysics, Plasma, Acoustic wave, Grain size, Ion, symbols.namesake, Mach number, Physics::Plasma Physics, Particle-size distribution, symbols, Astrophysics::Solar and Stellar Astrophysics, Lagrangian coherent structures, Ion distribution, Astrophysics::Earth and Planetary Astrophysics, Atomic physics
Abstract

The investigation of the formation of non‐linear coherent structures in dusty plasmas taking into account the dust size and non‐thermal ion distributions is conducted. Conditions of the existence of solitons in terms of the Mach number, concentration of non‐thermal ions, dust charge and the permeability of the grains are evaluated.

Published
2005
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