| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Non Planar Electrostatic Solitary Wave Structures in Negative Ion Degenerate Plasma |
| S. Hussain1,2* N. Akhtar1, Saeed-ur-Rehman1
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1Theoretical Plasma Physics Division, PINSTECH, Nilore, Islamabad
2Department of Physics and Applied Mathematics PIEAS, Nilore, Islamabad
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| Cite this article: |
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S. Hussain, N. Akhtar, Saeed-ur-Rehman 2011 Chin. Phys. Lett. 28 045202 |
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Abstract Theoretical and numerical studies are performed for quantum ion acoustic solitons in planar and non-planar geometries in an unmagnetized homogenous plasma consisting of warm positive and negative ions with nonthermal electrons. A deformed Korteweg de Vries (DKdV) equation is derived by using the reductive perturbation method. The numerical solution to the DKdV equation indicates that the quantum parameter, temperatures of positive ions, temperture of negative ions and electron density blatantly influence the propagation speed and the structure of quantum ion acoustic solitons. The geometrical effects on the structure of quantum ion acoustic wave are discussed. It is shown that the amplitude and propagation speed in spherical geometry is larger as compared to cylinderical and planar geometries for different values of the above-mentioned parameters.
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| Keywords:
52.27.Cm
52.35.Fp
52.35.Mw.
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Received: 02 January 2011
Published: 29 March 2011
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| PACS: |
52.27.Cm
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(Multicomponent and negative-ion plasmas)
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52.35.Fp
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(Electrostatic waves and oscillations (e.g., ion-acoustic waves))
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52.35.Mw.
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