Database of Freja charging events

This is the database of pdf plots of Freja charging events. Please read the guide to the plots for more information. You may also try another access page with a JavaScript.

List of all available plots (LONG)

The following plot types are shown:

Plot type 1 Plot type 2
  • Spectrogram of HF emissions
  • Langmuir probe current
  • Ion data
  • MATE elcetron data (orbit > 1600)
  • TESP electron data (orbit < 730)
  • Enlarged ion data (O+)
  • Eclipse/Sunlight conditions (geometric)
  • Magnetic field direction vs S/C spin axis

Charging event types

shortlived: shorter than 30 s, longlived: longer than 30 s

Peak charging level <10 V Peak charging level 10-100 V Peak charging level >100 V
Main charging page

17.10. 2003 - Ari Viljanen (email: firstname.lastname@fmi.fi)

ESTEC contract 11974/96/NL/JG(SC) (*)