Main electron resonance of a bounded plasma at high magnetic fields

The main electron resonance, whose behavior up to ω_ce/ ω ≃ 1 is well understood, has now been experimentally followed up to high magnetic fields (ω_ce/ω ≃ 50) in a very quiet plasma. There is very good agreement with recent theoretical predictions based on the hydrodynamical description of a bounded, hot, electron-ion plasma, thereby confirming, for the values of the plasma parameters involved, the validity of the theory used.