Lagrangean description of nonlinear dust--ion acoustic waves in dusty plasmas

Details Lagrangean description of nonlinear dust--ion acoustic waves in dusty plasmas Lagrangean description of nonlinear dust--ion acoustic waves in dusty plasmas

2004-03-22

arxiv.org/abs/physics/0403104v1

Physics

Plasma Physics

9 pages, 2 figures, submitted to European Physical Journal D

Scientific paper

10.1140/epjd/e2004-00068-4

An analytical model is presented for the description of nonlinear dust-ion-acoustic waves propagating in an unmagnetized, collisionless, three component plasma composed of electrons, ions and inertial dust grains. The formulation relies on a Lagrangean approach of the plasma fluid model. The modulational stability of the wave amplitude is investigated. Different types of localized envelope electrostatic excitations are shown to exist.

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