Other
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008phpl...15f2301k&link_type=abstract
Physics of Plasmas, Volume 15, Issue 6, pp. 062301-062301-6 (2008).
Other
30
Nonlinear Phenomena: Waves, Wave Propagation, And Other Interactions, Magnetohydrodynamics And Plasmas
Scientific paper
The linear and nonlinear quantum ion-acoustic waves propagating obliquely in two dimensions in superdense, magnetized electron-positron-ion quantum plasma are investigated on the basis of quantum hydrodynamic model. It is found in linear analysis that the quantum corrections of diffraction are important in the very short wavelength regime that may be found in dense astrophysical plasmas. To investigate the solitary waves, the Zakharov-Kuznetsov equation is derived and the solution is presented in the small amplitude limit. By numerical analysis, it is found that the soliton structure of the ion acoustic wave depends upon quantum pressure, concentration of positrons, strength of magnetic field, and the propagation angle.
Khan Saad Ahmad
Masood Waqas
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