| Abstract: | We 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. |
