Magnetic Field/Electric Field Instruments
PWI
The objective of this investigation is to determine the dynamic behavior of the plasma trapped in the earth's magnetosphere (i.e. toroidal and poloidal currents, oscillations and waves in the plasmas, ion entrance and exit via the ionosphere and solar wind, and the extent of the plasma sheath). The instrument measures electric fields over the range 0.5 Hz to 400 kHz, and magnetic fields over the range 1 Hz to 10 kHz. Triaxial magnetic search coils are utilized in addition to a pair of electric dipole antennas. The instrument contains two sweep-frequency receivers (12 Hz to 400 kHz and 12 Hz to 6.25 kHz), a multichannel analyzer (5.6 Hz to 311 kHz for the electric antenna and 5.6 Hz to 1.0 kHz for the magnetic coils), a low frequency waveform receiver (0.01 to 10 Hz), and a wideband waveform receiver (10 Hz to 16 kHz). Principal Investigator: Prof. Hiroshi Matsumoto Radio Atmospheric Science Center Kyoto University Gokasho, Uji, Kyoto 611, Japan Phone: 81-774-33-2532 Fax: 81-774-31-8463 e-mail: matsumoto@kurasc.kyoto-u.ac.jp See: http://www.kurasc.kyoto-u.ac.jp/gtlpwi and http://pwg.gsfc.nasa.gov/geotail_inst.shtml Group: Instrument_Details Entry_ID: PWI Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Magnetic Field/Electric Field Instruments Short_Name: PWI Long_Name: Plasma Waves Investigation (Geotail) End_Group Group: Associated_Platforms Short_Name: GEOTAIL End_Group Online_Resource: http://www.kurasc.kyoto-u.ac.jp/gtlpwi/ Online_Resource: http://pwg.gsfc.nasa.gov/geotail_inst.shtml#PWI Group: Instrument_Logistics Instrument_Start_Date: 1992-07-24 Instrument_Owner: Radio Atmospheric Science Center, Japan End_Group End_Group