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Instrument: CPI-G : Comprehensive Plasma Investigation-Geotail
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The objective of the CPI investigation on Geotail is to make comprehensive
observations of the three-dimensional velocity distribution functions of
electrons and positive ions, with identification of ion species. The instrument
contains three sets of quadrispherical analyzers with channel electron
multipliers. These three obtain three-dimensional measurements for hot plasma
and solar wind electrons, for solar wind ions, and for positive-ion composition
measurements. The positive-ion composition measurement includes five miniature
imaging mass spectrometers at the exit aperture of the analyzer, and covers
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Instrument Logistics
Data Rate: 4.608 kbps
Instrument Start Date: 1992-07-24
Instrument Owner: University of Iowa

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