Effect of Ionic Temperature on Ion-Acoustic Solitons in a Two-Electron—Temperature Plasma with Adiabatic Positive and Negative Ions and Isothermal Electrons

Abstract

Ion-acoustic Solitons in a collisionless two-electron-temperature plasma with adiabatic positive and negative ions with equal ion temperature and isothermal electrons are studied by using the reductive perturbation method. The basic set of fluid equations are reduced for fast ion-acoustic wave to the Korteweg-de Vries and modified Korteweg-de Vries equation and for slow ion-acoustic wave to the Korteweg-de Vries equation and solutions of these equations are obtained. The effect of ionic temperature, negative ions and small concentration of a cooler electron component on the amplitude and width of fast and slow ion-acoustic solitons is investigated.