Dynamics of nonlinear ion-waves in Fermi-Dirac electron-positron-ion magnetoplasmas |
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Authors: | M Akbari-Moghanjoughi |
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Institution: | 1.Faculty of Sciences, Department of Physics,Azarbaijan University of Tarbiat Moallem,Tabriz,Iran |
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Abstract: | Oblique propagation and head-on collisions of solitary structures is studied in a dense magnetized plasma comprised of relativistic
ultra-cold electrons and positrons and positive dynamic ions using conventional extended multi-scales technique, in the ground
of quantum hydrodynamics model. The variations of head-on collision phase-shift as well as the characteristic soliton amplitude
and width is evaluated numerically in terms of other plasma parameters such as mass-density, normalized magnetic field strength,
its angle with respect to the soliton propagation and the relative positron number-density. The relevance of current investigations,
with appropriate plasma parameters for the astrophysical dense magnetized objects such as white-dwarfs, is addressed. |
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Keywords: | |
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