Coupled ion acoustic and drift solitons in a magnetized bi-ion plasma with pseudo-potential approach
An analytical approach is employed to investigate the coupled drift and ion acoustic solitary structures in a bi-ion ionospheric oxygen-hydrogen (O-H) plasma having density and temperature inhomogeneities, as well as Kappa distributed electrons. We derive the nonlinear partial differential equation,...
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Veröffentlicht in: | Physics of plasmas 2018-02, Vol.25 (2) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | An analytical approach is employed to investigate the coupled drift and ion acoustic solitary structures in a bi-ion ionospheric oxygen-hydrogen (O-H) plasma having density and temperature inhomogeneities, as well as Kappa distributed electrons. We derive the nonlinear partial differential equation, which is then turned into a pseudo-potential energy equation. With the help of necessary conditions for the formation of solitons, we get the profiles of pseudo-potential and solitary pulses by employing the Sagdeev truncated method. It is shown that both rarefactive (dip) and compressive (hump) solitary structures are possible in a plasma having both density and temperature gradients. The dip structures are supersonic in nature, and hump structures are subsonic as reported by Freja satellite mission earlier. |
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ISSN: | 1070-664X 1089-7674 |
DOI: | 10.1063/1.5018228 |