2.2.6 spase://CDPP/Instrument/AMDA/SWARM-C/LP EFI / LP Electric Field Instrument : Langmuir Probe 2016-11-04T15:37:46Z he Swarm EFIs have each two Langmuir probes. Both probes operate most of the time in a novel harmonic mode featuring a sinusoidally varying bias suitable for measuring not only currents, but also admittances. A comparable instrument has not previously been in orbit. spase://CDPP/Person/D.Knudsen PrincipalInvestigator spase://CDPP/Person/S.Buchert Scientist EFI description https://earth.esa.int/web/guest/missions/esa-eo-missions/swarm/instruments/efi LangmuirProbe 2013-12-02T00:00:00 spase://CDPP/Observatory/AMDA/SWARM-C