This experiment was designed to study, by means of identical instrumentation on the mother/daughter spacecraft, the spatial and temporal variations of the solar wind and magnetosheath electrons and ions. Protons and electrons in the energy range from 1 eV to 45 keV were measured in 64 contiguous energy bands with an energy resolution (delta E/E) of 0.16. A quadrispherical low-energy proton and electron differential energy analyzer (LEPEDEA), employing seven continuous channel electron multipliers in each of its two (one for protons and one for electrons) electrostatic analyzers was flown on both the mother and the daughter spacecraft. All but 2% of the 4-pi-sr solid angle was covered for particle velocity vectors. A GM tube was also included, with a conical field of view of 40° full-angle, perpendicular to the spin axis. This detector was sensitive to electrons with E>45 keV, and to protons with E>600 keV.
ISEE LEPEDEA Survey Spectrogram
This is a sample of spectrogram data from the LEPEDEA Instrument on board the ISEE 1 spacecraft.
The ISEE Survey spectrograms (like that above) are currently available as GIFTM images for periods ranging from 27 Feb 1978 (78/058) to 23 Sep 1987 (87/266). They are sorted by year and then by quarter-year sub-directories.
To request data, please contact Rae Dvorsky.
Last Modified: Sat Mar 14 15:54:14 2009
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