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Title of Journal: Indian J Phys

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Abbravation: Indian Journal of Physics

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Springer-Verlag

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DOI

10.1016/0020-7292(95)02587-1

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0974-9845

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Ion acoustic solitary waves in nonplanar plasma wi

Authors: M Shahmansouri B Shahmansouri D Darabi
Publish Date: 2013/03/26
Volume: 87, Issue: 7, Pages: 711-716
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Abstract

Ion acoustic IA solitons are studied in a twotemperature kappadistributed electron plasma As we expect for doubleBoltzmann electrons solitons of both polarities can exist in this model Some density ratios support coexistence of both the polarities We have also derived an deformed Korteweg–de Vries equation for IA waves by using reductive perturbation technique The influence of geometry and suprathermality effects on IA waves is investigated This model can support both compressive and rarefractive solitons for some plasma parameters The low temperature electron component favors the emergence and development of rarefractive solitons It is found that the amplitude and the velocity of IA solitons increase with superthermal index of hot electrons κ 2 Also it is clear that the increase rate of velocity and amplitude in spherical geometry is greater than that for cylindrical geometry We have considered the transverse perturbation for IA solitons with spherical symmetry It is shown that the evolution of IA solitons is governed by a variable coefficient spherical Kadomtsev–Petviashvili equation

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