Effect of trapped electrons on soliton energy in an inhomogeneous magnetized multicomponent plasma

Abstract

Energy carried by ion acoustic solitons are estimated in an inhomogeneous plasma containing negative ions and a group of hot and cold nonisothermal electron species in addition to positive ions in presence of external magnetic field. On the basis of Reductive Perturbation Technique (RPT), a relevant Korteweg-de Vries (KdV) equation is obtained and solved for its solitary wave solution. The profile of the propagating soliton is used to obtain an expression of the soliton energy. The characteristics of soliton and the energy carried by it are investigated under the effects of nonisothermal electrons trapped by wave potential, negative ions concentration, strength of the magnetic field and its obliqueness. © 2010 IOP Publishing Ltd.