The Medium-energy particle analyzer (MEPA) on the AMPTE CCE spacecraft

Details The Medium-energy particle analyzer (MEPA) on the AMPTE CCE spacecraft The Medium-energy particle analyzer (MEPA) on the AMPTE CCE spacecraft

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985itgrs..23..230m&link_type=abstract

IEEE Transactions on Geoscience and Remote Sensing (ISSN 0196-2892), vol. GE-23, May 1985, p. 230-233. NASA-supported research.

Computer Science

62

Aeronomy, European Space Programs, Particle Energy, Radiation Measuring Instruments, Satellite-Borne Instruments, Block Diagrams, Earth Magnetosphere, Heavy Ions, Incident Radiation, Solid State Devices

Scientific paper

A major objective in the design of the Charge Composition Explorer (CCE) is related to the measurement of small fluxes of ions (lithium and barium) injected in the solar wind and the deep magnetotail. A second important objective is concerned with the comprehensive measurement of the composition and dynamics of the natural-particle population. The medium-energy particle analyzer (MEPA) in the CCE is designed to cover an energy range which is normally covered by electrostatic analyzers. In order to prevent saturation by the large magnetospheric fluxes of low-energy protons, the MEPA sensor was designed to have a low efficiency for protons, but a high efficiency for the rarer heavier nuclei. The considered aims could be achieved by developing a technology, new to space flight, for measuring energetic ion composition. Particle mass is determined on the basis of the measurement of particle time of flight and total energy.

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