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Effects of two temperature electrons on Gardner solitons and double layers in a nonthermal dusty electronegative plasma

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Abstract

Gardner solitons (GSs) and double layers (DLs) of dust ion acoustic (DIA) waves in an electronegative plasma (composed of inertial positive and negative ions, Maxwellian cold electrons, non-thermal hot electrons, and negatively charged static dust) are studied. The reductive perturbation method is employed to derive the Korteweg-de Vries (K-dV), modified K-dV, and standard Gardner equations, which admits solitary wave and DLs solutions for σ around its critical value σ c (where σ c is the value of σ corresponding to the vanishing of the nonlinear coefficient of the K-dV equation). The parametric regimes for the existence of the GSs and DLs, are obtained. The basic features of DIA GSs and DLs (associated with negative structure only) are analyzed. It has been found that the characteristics of DIA GSs and DLs, are different from that of the K-dV solitons and mK-dV (mixed K-dV) solitons. The implications of our results to different space and laboratory plasma situations are discussed.

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Correspondence to M. M. Hossain.

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Akhter, T., Hossain, M.M. & Mamun, A.A. Effects of two temperature electrons on Gardner solitons and double layers in a nonthermal dusty electronegative plasma. Astrophys Space Sci 344, 105–112 (2013). https://doi.org/10.1007/s10509-012-1306-0

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  • DOI: https://doi.org/10.1007/s10509-012-1306-0

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