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Low Frequency Solitary Waves in Magnetized Electron--Positron--Ion Plasmas |
| M. Ansar Mahmood1;S. Mahmood2,3;Arshad M. Mirza1;H. Saleem2,3 |
| 1Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
2Department of Physics, COMSATS Institute of Information Technology, H-8, Islamabad 45320, Pakistan
3PINSTECH (Physics Research Division), P.O. Nilore Islamabad 45320, Pakistan |
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| Cite this article: |
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M. Ansar Mahmood, S. Mahmood, Arshad M. Mirza et al 2005 Chin. Phys. Lett. 22 632-635 |
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Abstract Nonlinear electrostatic and electromagnetic low frequency waves are studied in magnetized electron--positron--ion (EPI) plasmas. The effects of full nonlinearity and three dimensional ion motion have been taken into account. It is shown that both density dips and humps can coexist in EPI plasmas along with bell-shaped and kink-type solitons. The new results as well as several limiting cases for comparison with earlier work have been discussed, for the sake of completeness. Relevance of this work to space, astrophysical and laboratory plasmas is pointed out.
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| Keywords:
52.27.Aj
52.25.Xz
52.35.Sb
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Published: 01 March 2005
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| PACS: |
52.27.Aj
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(Single-component, electron-positive-ion plasmas)
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52.25.Xz
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(Magnetized plasmas)
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52.35.Sb
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(Solitons; BGK modes)
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