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Nonplanar Ion Acoustic Solitary Waves in a Two-Electron Temperature Plasma |
| W. Masood1, S. Hussain1,2, S. Mahmood1, Arshad M. Mirza3 |
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1Theoretical Plasma Physics Division, Pinstech P. O. Nilore, Islamabad, Pakistan2Pakistan Institute of Engineering and Applied Sciences (PIEAS), P. O. Nilore, Islamabad, Pakistan3Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan |
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| Cite this article: |
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W. Masood, S. Hussain, S. Mahmood et al 2009 Chin. Phys. Lett. 26 122301 |
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Abstract Linear and non-linear properties of ion acoustic wave (IAW) propagating in a two-electron temperature plasma are investigated from both analytical and numerical perspectives by employing the fluid theory. A one-dimensional modified Korteweg de Vries equation is derived for the IAW using the reductive perturbative technique in a nonplanar geometry. It is observed that the ion acoustic soliton in a two-temperature plasma admits rarefactive (dip like) solitons. In the limit that the cold electron population goes to zero, it is observed that the ion acoustic soliton yields compressive (hump like) solitons. The variation of the ion acoustic soliton with different plasma parameters is also shown. The present investigation may be beneficial to explain some aspects of ion acoustic rarefactive solitary structures observed in space environments where two-electron temperature plasmas have been observed.
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| Keywords:
23.23.+x
56.65.Dy
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Received: 15 June 2009
Published: 27 November 2009
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