The ISEE 1 and 2 Medium Energy Particles Experiment

Details The ISEE 1 and 2 Medium Energy Particles Experiment The ISEE 1 and 2 Medium Energy Particles Experiment

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978itge...16..270w&link_type=abstract

IEEE Transactions on Geoscience Electronics, vol. GE-16, July 1978, p. 270-280. Research supported by the Max-Planck-Gesellscha

Computer Science

15

Earth Magnetosphere, International Sun Earth Explorer 1, International Sun Earth Explorer 2, Particle Energy, Satellite-Borne Instruments, Spaceborne Experiments, Angular Distribution, Electron Energy, Geomagnetic Tail, Interplanetary Medium, Particle Telescopes, Proton Energy, Spacecraft Electronic Equipment, Temperature Control

Scientific paper

The Medium Energy Particles Experiment (MEPE) on board ISEE 1 and 2 consists of the WIM instrument on ISEE 1 and the KED instrument on ISEE 2. Both instruments employ solid-state detectors and magnetic analysis to measure the angular, energy, and intensity distributions of protons (ions) above 24 keV and electrons above 20 keV. The WIM instrument also includes a composition measurement employing Delta E-by-E and time-of-flight techniques. Three-parameter analysis is performed above 250 keV/nucleon, and single parameter analysis is performed above 125 keV/nucleon for helium through oxygen. Three-dimensional angular distributions are obtained through the use of a scan platform in the WIM instrument and multiple detector heads in the KED instrument. A variety of operational modes are used to optimize data collection from both instruments. Resolutions up to 128 channels in energy, 192 samples over the unit sphere in angle, and 0.095 sec in time are available.

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