Stability Dust-Ion-Acoustic Wave in Dusty Plasmas With Stream -Influence of Charge Fluctuation of Dust Grains

Details Stability Dust-Ion-Acoustic Wave in Dusty Plasmas With Stream -Influence of Charge Fluctuation of Dust Grains Stability Dust-Ion-Acoustic Wave in Dusty Plasmas With Stream -Influence of Charge Fluctuation of Dust Grains

2007-01-30

arxiv.org/abs/physics/0701334v1

AIP Conf. Proc. 812, 385 (2005)

Physics

Plasma Physics

4 pages,Plasma 2005,Opole-Turawa, Poland, 6-9 september 2005

Scientific paper

10.1063/1.2168867

There is a quickly increasing wealth of experimental data on so-called dusty plasmas i. e. ionized gases or usual plasmas that contain micron sized charged particles. Interest in these structures is driven both by their importance in many astrophysical as well as commercial situations. Among them are linear and nonlinear wave phenomena. We consider the influence of dust charge fluctuations on stability of the ion-acoustic waves when the stream of particles is present. It is assumed that all grains of dust have equal masses but charges are not constant in time-they may fluctuate in time. The dust charges are not really independent of the variations of the plasma potentials. All modes will influence the charging mechanism, and feedback will lead to several new interesting and unexpected phenomena. The charging of the grains depends on local plasma characteristics. If the waves disturb these characteristic, then charging of the grains is affected and the grain charge is modified, with a resulting feedback on the wave mode. In case considering here, when temperature of electrons is much greater then the temperature of the ions and temperature of electrons is not great enough for further ionization of the ions, we show that stability of the acoustic wave depends only one phenomenological coefficient.

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