7-11 July 2014
Africa/Johannesburg timezone
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Polarity changes of small-amplitude ion-acoustic and electron-acoustic solitons in multi-fluid space plasmas

Presented by Dr. Carel OLIVIER on 8 Jul 2014 from 10:20 to 10:40
Type: Oral Presentation
Session: Space
Track: Track D2 - Space Science

Abstract

The properties of ion-acoustic and electron-acoustic solitons are studied for fluid models describing three-component and four-component space plasmas. Each plasma model is composed of one or two (different temperatures but same mass) ion species and one or two (different temperatures) electron species. We use a reductive perturbation method to derive Korteweg- deVries equations that describe small-amplitude solitons for each model. The results are shown to be in good agreement with arbitrary amplitude soliton results available in the literature. A comparison of the results for the different models will provide insight into how polarity changes in the observed soliton structures are related to the plasma composition.

Award

No

Level

N/A

Supervisor

Dr. Shimul Maharaj smaharaj@sansa.org.za

Paper

No

Place

Room: D Les 204


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