Abstract
AbstractWe made an attempt to study the propagation of multidimensional ion‐acoustic waves in multicomponent plasmas that include negative ions by deriving a Kodomtsev‐Petviashvili (K‐P) equation. The negative ions, as expected, introduce the precursor on the propagation because of which the need arises to derive a modified K‐P equation with higher order non‐linearity. We have examined a number of solitons like waves and supported the results by numerical simulation. The results reveal the existence of compressive and rarefactive solitary waves which are comparable with those of one‐dimensional solitary waves in plasmas with negative ions except that multidimensional propagation of ion‐acoustic waves is more involved than unidirectional propagation.
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