The behaviour of both small amplitude and arbitrary amplitude nonlinear
electrostatic fluctuations are studied in electron-positron plasmas. The propagation
characteristics of associated linear modes are also examined for selected
plasma models. In the case of the four component, two-temperature,
electron-positron plasma, three particular features are investigated. The first
investigates existence conditions of the range of possible electrostatic linear
waves that can propagate in a two-temperature electron-positron plasma, the
study being particularly relevant to both astrophysical situations and laser induced
fusion experiments. The second includes the development and investigation
of the mKdV-ZK equation governing the three dimensional propagation
of solitary waves in a magnetized plasma. The third application is the
investigation of nonlinear electrostatic solitary waves structures, similar to
those found in the broadband electrostatic noise observed in various regions
of the earth’s magnetosphere. The study ends by considering relativistic
effects on solitary waves in an electron-positron plasma. / Thesis (Ph.D.)-University of KwaZulu-Natal, Westville, 2009.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:ukzn/oai:http://researchspace.ukzn.ac.za:10413/8297 |
| Date | January 2009 |
| Creators | Lazarus, Ian Joseph. |
| Contributors | Bharuthram, Ramesh., Pillay, Sadha. |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | English |
| Type | Thesis |
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