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- Title
Overtaking collision of two ion acoustic soliton in a plasma with a q-nonextensive electron and thermal positrons.
- Authors
Roy, Kaushik; Kumar Maji, Tapas; Kumar Ghorui, Malay; Chatterjee, Prasanta; Roychoudhury, Rajkumar
- Abstract
Theoretically the propagation of two ion acoustic soliton interaction in a three component collisionless unmagnetized plasma which consists of electrons, positrons and cold ions, has been investigated here by employing reductive perturbation technique. In this study, q distributed electrons and Maxwell-Boltzmann distributed positrons are considered and Korteweged-de Vries (KdV) equation is derived. The KdV equation is solved to get two soliton solution by using Hirota bilinear method. The effects of the q distributed electrons on the profiles of two soliton structures and the corresponding phase shifts are investigated. It is observed that both the nonextensive parameter ( q) and the ratio of positrons density and electron density ( p= n/ n), play a significant role in the formation and existence of two soliton and also in the nature of their phase shifts.
- Subjects
ION acoustic waves; SOLITONS; MAXWELL-Boltzmann function; ASTRONOMICAL perturbation; THERMAL electrons; ELECTRON density; PLASMA gases; POSITRONS
- Publication
Astrophysics & Space Science, 2014, Vol 352, Issue 1, p151
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-014-1906-y