Space Environment

SALAMMBO - 4D
3D Numerical Model for the Study of the Charged Particle Transport in the Earth's Magnetosphere

Objectives

• Determination of the particle fluxes and their dynamics in the Earth’s internal magnetosphere for the problems of spacecraft anomalies linked to the radiation environment:
  • internal charging and discharges
  • single event effects
  • total dose effects

Characteristics

• Particles: protons (1 keV-100 MeV) electrons (50 keV-10 MeV)
• Model: 4D in the phase space (spatially 3D)
• Magnetic field model: eccentric tilted dipole
• Spatial resolution: between 500 km and 3 000 km
• Temporal resolution: 1 minute
• Calculation boundaries: altitude range 100 km - 40 000 km
• Maximum computation time: ~ 1 day

Physical Phenomena taken into Account

• Radial transport by magnetic and electric field fluctuations
• Azimuth transport by magnetic and electric drifts
• Friction process by the thermospheric atoms and molecules
• Coulomb interactions with free and bounded electrons
• Wave-particle interactions (plasmapheric hiss, whistlers, VLF)
• Charge exchange phenomenon

Funding

• Centre National d'Etudes et de Recherches Aérospatiales (ONERA)
• Centre National d’Etudes Spatiales (CNES)
• Délégation Générale de l’Armement

Last Update:April 25, 2003 - © ONERA 2009 - Terms of use