INTERACTION OF BRIGHT AND DARK SOLITARY WAVES IN A MULTICOMPONENT PLASMA WITH SUPERTHERMAL ELECTRONS FOR DIFFERENT COORDINATES SYSTEMS | ||||
| Egyptian Journal of Applied Science | ||||
| Volume 34, Issue 5, May 2019, Page 89-110 PDF (1.56 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejas.2019.338022 | ||||
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| Abstract | ||||
| ABSTRACT The interaction behavior of planar/nonplanar of bright and dark ion acoustic solitary waves (IASWs) in a multicomponent plasma composed of positive and negative ion fluids and kappa distributed superthermal electrons is investigated. For the generic case, the extended Poincaré - Lighthill - Kuo (PLK) method is employed to derive planar and nonplanar Korteweg-de Vries (KdV) equations and phase shift equations. The nonlinear propagation and the collision of planar/nonplanar bright and dark IASWs are studied. On the other hand, at a critical value of ion concentration, the extended PLK method is applied to obtain the modified planar/nonplanar KdV equations and their corresponding phase shifts. It is found that planar/nonplanar bright – planar/nonplanar dark IASWs can propagate and collide with each other. In all cases, the effects of several parameters such as: ion concentration, the position of IASWs, negative ion-to-positive ion mass ratio, the superthermality of electrons on the trajectories of planar/nonplanar bright and dark IASWs after collision are investigated. Numerical calculations lead to some highlights on the properties of IASWs (e.g., in laboratory plasmas such as laser–matter/plasma interaction experiments). | ||||
| Keywords | ||||
| Key Words: Planar/nonplanar of bright and dark ion acoustic solitary waves; The extended Poincaré-Lighthill-Kuo method; positive and negative ion fluids | ||||
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