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| Titel |
New Ion Impact Simulations for Titan |
| VerfasserIn |
Ilkka Sillanpää, Robert Johnson, Esa Kallio, Riku Jarvinen |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250047832
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| Zusammenfassung |
| Hybrid modelling allows tracking of ion particles in self-consistent electromagnetic
fields. At Titan the ion gyromotion plays a significant role in the interaction with the
ambient magnetospheric plasma flow of Saturn. We present new hybrid simulation
results on the ion deposit fluxes and energies for flow ions as well as Titan’s pickup
ions.
The water-group ions of the flow are shown to dominate the energy deposition by
particles into Titan’s ionosphere, while incident protons and pickup ions deposit about a total
of a third of the water-group energy in the studied case. Neutral collisions for the incident
ions were taken into account via stopping cross sections. We show that Titan’s neutral
exosphere reduces significantly the flux and energy deposit of especially lighter flow ions into
Titan’s atmosphere. |
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