NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Solar Wind Electron Analyzer (SWEA)

NSSDCA ID: 2013-063A-07

Mission Name: Mars Atmosphere and Volatile EvolutioN (MAVEN)
Principal Investigator:Dr. David L. Mitchell


The Solar Wind Electron Analyzer (SWEA) is designed to measure the energy and angular distribution of solar wind and ionospheric electrons. The analyzer covers an energy range of 5 eV to 5 keV with a resolution of 12% below 50 eV, increasing to 18% at maximum energy. The field of view is 360 x 130 degrees with an angular resolution of 22.5 x 20 degrees. SWEA has two measurement modes, a solar wind mode for altitudes above 500 km and an ionosphere mode below 500 km. In solar wind mode energy spectra and pitch angle distributions are measured every 8 seconds, and in ionosphere mode every 2 seconds. The instrument is mounted on the end of a 1.75 m boom extended from the MAVEN back panel.

Image courtesy NASA/SSL

Alternate Names


    • Planetary Science: Fields and Particles

    Additional Information

    Questions and comments about this experiment can be directed to: Dr. David R. Williams



    NameRoleOriginal AffiliationE-mail
    Dr. David L. MitchellLead InvestigatorUniversity of California,
    [] NASA Logo -