Effect of Ion and Negative Ion Temperatures on Kdv and Mkdv Solitons in a Multicomponent Plasma

Abstract

The formation of ion-acoustic solitons (IASs) in an unmagnetized plasma with negative ions has been investigated through the KdV equation in both the situations Q'( = m(j)=m(i)= negative to positive ion mass ratio) less and greater than one and the mKdV equation only for Q' > 1. The existence of both KdV and mKdV solitons has been established for alpha (= ion to electron temperature ratio) > beta (= negative ion to electron temperature ratio) and alpha < beta, which is the new outcome of the current investi-gation. Furthermore, the existence of both compres-sive and rarefactive solitons for Q' > 1 and Q'< 1 has been demonstrated. A dispersion capable action. and