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Interaction of cylindrical and spherical ion acoustic solitary waves with superthermal electrons and positrons

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Abstract

Interaction of nonplanar ion acoustic solitary waves is an important source of information to study the nature and characteristics of ion acoustic solitary waves (IASWs) structures. The head-on collision between two cylindrical/spherical IASWs in un-magnetized plasmas comprising with inertial ions, superthermal electrons and positrons is investigated by using the extended version of Poincaré-Lighthill-Kuo (PLK) perturbation method. It has been shown numerically that how the interactions are taking place in cylindrical and spherical geometry. The nonplanar geometry modified analytical phase shifts following the head-on collision are derived. The effects of the superthermal electrons and positrons on the phase shift are studied. It is shown that the properties of the interaction IASWs in different geometry are very different.

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Acknowledgements

This present work is supported by SAP-DRS Phase-II for research equipments and grants. Reviewer’s comments and constructive suggestions are gratefully acknowledged by the authors, without which this paper would not have been in the present form.

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Correspondence to Uday Narayan Ghosh.

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Ghosh, U.N., Chatterjee, P. Interaction of cylindrical and spherical ion acoustic solitary waves with superthermal electrons and positrons. Astrophys Space Sci 344, 127–133 (2013). https://doi.org/10.1007/s10509-012-1307-z

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  • DOI: https://doi.org/10.1007/s10509-012-1307-z

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