GEOTAIL Instruments

Item				 Instrument			Principal Investigator
-------------------------	-------------------------	----------------------

Electric Field (EFD)		Spherical Probe 		K. Tsuruda
				Wire Antenna 
				Electron Boomerang

Magnetic Field (MGF)		Fluxgate Search Coil		S. Kokunbun

Plasma (LEP)			Ion/Ele. Energy Analyzer	T. Mukai
				Solar Wind Ion Analyzer
				Ion Mass Spectormeter

Plasma (CPI)			Hot Plasma Analyzer		L.A. Frank
				Solar Wind Ion Analyzer
				Ion Composition Analyzer

Energetic Particles (HEP)	Low Energy Detector		T. Doke
				Burst Detector
				Isotope Telescopes

Energetic Particles (EPIC)	Supra-Thermal Ion Composition	R.W. McEntire			
				  Spectrometer
				Ion Composition Subsystem

Plasma Waves (PWI)		Multi-Channel Analyzer		H. Matsumoto
				Sweep Frequency Analyzer
				Wave Form Capture
				(both E and B fields)