 |
| Titel |
A simulation approach of high-frequency electrostatic waves found in Saturn's magnetosphere |
| VerfasserIn |
E. J. Koen, A. B. Collier, S. K. Maharaj |
| Konferenz |
EGU General Assembly 2012
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250059683
|
|
|
|
|
|
| Zusammenfassung |
| Using a particle-in-cell (PIC) simulation, the characteristics of electron plasma and
electron-acoustic waves are investigated in plasmas containing an ion and two electron
components. The electron velocities are modeled by a combination of two κ distributions.
The model applies to the extended plasma sheet region in Saturn’s magnetosphere where the
cool and hot electron velocities are found to have low indices, κc - 2 and κh -
4. For such low values of κc and κh, the electron plasma and electron-acoustic
waves are coupled. The model predicts large amplitude electron plasma waves while
electron-acoustic waves may need a source of free energy to drive the mode unstable. |
|
|
|
|
|
|