Linear and nonlinear ion-acoustic waves in very dense magnetized plasmas

Khan, S. A.; Mahmood, S.; Saleem, H.
August 2008
Physics of Plasmas;Aug2008, Vol. 15 Issue 8, p082303
Academic Journal
Obliquely propagating linear and weakly nonlinear ion-acoustic waves in a magnetized quantum plasma are investigated by employing the quantum hydrodynamic formulation. A linear dispersion relation is presented and the nonlinear Korteweg–de Vries equation is derived using the reductive perturbative method. The dispersion caused by the quantum diffraction effects is possible only in a very short wavelength regime. The amplitude and width of the solitons formed by the ion-acoustic waves propagating in a magnetized plasma depend upon various parameters. Possible applications of the results to dense plasmas are discussed.


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