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Effects of nonlinear plasma wake field on the dust-lattice wave in complex plasmas

  • Myoung-Jae Lee (a1) (a2) and Young-Dae Jung (a3) (a4)


The influence of a nonlinear ion wake field on the dust-lattice wave is investigated in complex dusty plasmas. The dispersion relation for the dust-lattice wave is derived from the equation of motion including the contribution due to the nearest-neighbour dust grain interaction. The results show that the nonlinear wake-field effect increases the wave frequency, especially at the maximum peak positions. It is found that the oscillatory behaviour of the dust-lattice wave enhances with an increase of the spacing of the dust grains. It is also found that the amplitude of the dust-lattice wave significantly decreases with an increase of the inter-dust grain distance. In addition, it is found that the amplitude of the dust-lattice wave increases with increasing Debye length. The variation of the dust-lattice wave due to the Mach number and plasma parameters is also discussed.


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Effects of nonlinear plasma wake field on the dust-lattice wave in complex plasmas

  • Myoung-Jae Lee (a1) (a2) and Young-Dae Jung (a3) (a4)


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