9-13 July 2012
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=11&confId=14"><font color=#ff0000>SAIP2012 PROCEEDINGS AVAILABLE</font></a>

Extracting growth rates from a Particle-In-Cell simulation

10 Jul 2012, 17:30
2h
IT Building

IT Building

Poster Presentation Track D2 - Space Science Poster Session

Speaker

Mr Etienne Koen (South Africa National Space Agency)

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Main supervisor (name and email)<br>and his / her institution

Andrew Collier, collierab@gmail.com, South Africa National Space Agency

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?

PhD

Apply to be<br> consider for a student <br> &nbsp; award (Yes / No)?

Yes

Abstract content <br> &nbsp; (Max 300 words)

Using a Particle-In-Cell simulation, the characteristics of electrostatic waves are
investigated in a plasma containing 3 electron components (hot, cold and beam electrons) and a cold ion population. Three electrostatic modes are excited, namely electron plasma, electron acoustic and beam driven waves. These modes have a broad frequency spectrum and have been associated with intense broadband electrostatic noise observed in the Earth’s auroral zone. The growth rates of the beam mode is studied by constructing a growth rate curve from the electric field data. The beam mode is found to have a high growth rate for an intermediate range of wave numbers while it is damped elsewhere.

Primary author

Mr Etienne Koen (South Africa National Space Agency)

Co-authors

Dr Andrew Collier (South Africa National Space Agency) Dr Shimul Maharaj (South Africa National Space Agency)

Presentation Materials

Peer reviewing

Paper