7-11 July 2014
Africa/Johannesburg timezone
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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
Session: Poster1
Track: Track D2 - Space Science
Board #: D2.78

Abstract

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.

Award

No

Level

NA

Supervisor

Prof Manfred Hellberg, University of KwaZulu-Natal, email address: hellberg@ukzn.ac.za

Paper

No

Place

Room: D Ring ground level


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