9-13 July 2012
Extracting growth rates from a Particle-In-Cell simulation
Presented by Mr. Etienne KOEN on 10 Jul 2012 from 17:30 to 19:30
Type: Poster Presentation
Session: Poster Session
Track: Track D2 - Space Science
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.
Andrew Collier, email@example.com, South Africa National Space Agency