FIZIKA A 16 (2007) 1 , 11-24

size 238 kBsize 1138 kB

GENERAL THEORY OF HIGHER-ORDER CORRECTIONS TO SOLITARY WAVES IN A MULTICOMPONENT PLASMA

K. K. MONDAL

Faculty of Science, Sovarani Memorial College, Jagatballavpur,
Howrah, West Bengal, Pin-711408, India
E-mail address: kalyan_mondal@vsnl.net

Received 20 April 2006;   Accepted 20 September 2006
Online 22 May 2007

A generalized theory on the combined effects of ion-temperature, negative ions and higher-order corrections on ion-acoustic solitary waves in a multicomponent plasma containing warm, relativistic positive ions and negative ions, two-temperature and non-isothermal electrons has been made using reductive perturbation method. The basic set of fluid equations for the warm ion-fluids have been reduced to the renormalized Korteweg-de-Vries equation for the first-order perturbed potential and then a renormalized linear inhomogeneous equation for the second-order perturbed potential. Steady-state solutions of the coupled equations have been derived and eventually the solution representing the potential associated with the ion-acoustic wave has been obtained. The soliton profiles have been displayed graphically under various conditions.

PACS numbers: 52.35 Fp, 52.35 Mw, 52.35 Sb
UDC 533.951

Keywords: ion-acoustic solitary waves, multicomponent plasma, non-isothermal electrons, K-dV equation

Copyright by The Croatian Physical Society
For problems or questions please contact fizika@fizika.hfd.hr