On the presence of stopbands in acoustic soliton existence domains
Presented by Prof. Manfred HELLBERG on 8 Jul 2014 from 17:10 to 19:00
Type: Poster Presentation
Track: Track D2 - Space Science
Board #: D2.78
A fully nonlinear Sagdeev pseudopotential approach is used to study the existence domain of fast ion-acoustic solitons in a plasma composed of cold and warm adiabatic positive ion species and Boltzmann electrons. It is shown that, perhaps surprisingly, for appropriate values of the ion mass ratio and the electron-warm ion temperature ratio, there is a range in cold-to-warm ion density ratio over which a stopband in soliton speed exists. Solitons do not propagate in the stopband, although they can occur for both higher and lower speeds.
Prof Manfred Hellberg, University of KwaZulu-Natal, email address: firstname.lastname@example.org