Electrostatic acoustic modes in a self-gravitating complex plasma with variable charge impurities

Details Electrostatic acoustic modes in a self-gravitating complex plasma with variable charge impurities Electrostatic acoustic modes in a self-gravitating complex plasma with variable charge impurities

2005-01-08

arxiv.org/abs/nlin/0501016v1

Nonlinear Sciences

Pattern Formation and Solitons

13 pages, 5 figures. Physics Letters A (2005,To be published)

Scientific paper

A linear theory of dust acoustic (DA) and dust ion-acoustic (DIA) waves in a self-gravitating collisional dusty plasma contaminated by variable-charge impurities is presented for a self-consistent closed system. The ion-drag force arising from the ion orbital motion as well as momentum transfer from all the ions and self-gravitation are taken into consideration. The physical processes, viz., dust-charge relaxation, ionization, recombination and collisional dissipations are also taken into account self-consistently. The generalized dispersion relation describing the coupling of the acoustic modes with the dust-charge relaxation mode (CRM) and damping of the waves is derived and analyzed numerically.

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