The Effect of Dust Particles on Ion Acoustic Solitary Waves in a Dusty Plasma

Details The Effect of Dust Particles on Ion Acoustic Solitary Waves in a Dusty Plasma The Effect of Dust Particles on Ion Acoustic Solitary Waves in a Dusty Plasma

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jass...21..201c&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 21, no. 3, p.201-208

Astronomy and Astrophysics

Astronomy

Dust Space Plasma, Ion Acoustic Solitary Wave, Soliton

Scientific paper

In this paper we have examined the effect of dust charge density on nonlinear ion acoustic solitary wave which propagates obliquely with respect to the external magnetic field in a dusty plasma. For the dusty charge density below a critical value, the Sagdeev potential Ψ(n) has a singular point in the region n<1, where n is the ion number density divided by its equilibrium number density. If there exists a dust charge density over the critical value, the Sagdeev potential becomes a finite function in the region n<1, which means that there may exist the rarefactive ion acoustic solitary wave. By expanding the Sagdeev potential in the small amplitude limit up to δ n4 near n=1, we find the solution of ion acoustic solitary wave. Therefore we suggest that the dust charge density plays an important role in generating the rarefactive solitary wave.

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