EXPLOSION OF SOLITON IN A MULTICOMPONENT PLASMA

A three-dimensional nonlinear Kadomtsev-Petviashvili (K-P) wave equati on is derived to discuss the solitons in multicomponent plasma contami nated with negative ions. A new formalism of the simple wave solution method is developed for finding the soliton behaviors caused by the pr esence of negative ions in plasmas. It is seen that the nonlinear wave equation leads, in some cases, to an ordinary differential equation a nd a straight way for solving the soliton propagation in plasmas. The overall observations describe the natures of compressive and rarefacti ve solitons along with the shock-like wave caused by the interaction o f negative ions. Also discussed are the possible controls of the scena rios of soliton behaviors. Moreover it is believed, from present inves tigations, that the observations of collapses or explosions in soliton s could enhance the understanding of the soliton phenomena in laborato ry and space plasmas. (C) 1997 American Institute of Physics.