Linear and nonlinear quantum ion-acoustic waves in dense magnetized electron-positron-ion plasmas
- Department of Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan and Department of Physics, Government College Bagh AJK (Pakistan)
- Theoretical Plasma Physics Division, PINSTECH, P. O. Nilore Islamabad (Pakistan)
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.
- OSTI ID:
- 21120426
- Journal Information:
- Physics of Plasmas, Vol. 15, Issue 6; Other Information: DOI: 10.1063/1.2920273; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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