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- Title
The MAVEN Solar Wind Electron Analyzer.
- Authors
Mitchell, D.; Mazelle, C.; Sauvaud, J.-A.; Thocaven, J.-J.; Rouzaud, J.; Fedorov, A.; Rouger, P.; Toublanc, D.; Taylor, E.; Gordon, D.; Robinson, M.; Heavner, S.; Turin, P.; Diaz-Aguado, M.; Curtis, D.; Lin, R.; Jakosky, B.
- Abstract
The MAVEN Solar Wind Electron Analyzer (SWEA) is a symmetric hemispheric electrostatic analyzer with deflectors that is designed to measure the energy and angular distributions of 3-4600-eV electrons in the Mars environment. This energy range is important for impact ionization of planetary atmospheric species, and encompasses the solar wind core and halo populations, shock-energized electrons, auroral electrons, and ionospheric primary photoelectrons. The instrument is mounted at the end of a 1.5-meter boom to provide a clear field of view that spans nearly 80 % of the sky with ∼20° resolution. With an energy resolution of 17 % ( $\Delta E/E$), SWEA readily distinguishes electrons of solar wind and ionospheric origin. Combined with a 2-second measurement cadence and on-board real-time pitch angle mapping, SWEA determines magnetic topology with high (∼8-km) spatial resolution, so that local measurements of the plasma and magnetic field can be placed into global context.
- Subjects
MARS Atmosphere &; Volatile Evolution (Artificial satellite); SOLAR wind; ELECTROSTATIC analyzers; ANGULAR distribution (Nuclear physics); NUCLEAR energy
- Publication
Space Science Reviews, 2016, Vol 200, Issue 1-4, p495
- ISSN
0038-6308
- Publication type
Article
- DOI
10.1007/s11214-015-0232-1