The MAVEN Solar Wind Electron Analyzer

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• 作者：D. L. Mitchell ; C. Mazelle ; J.-A. Sauvaud ; J.-J. Thocaven…
• 刊名：Space Science Reviews
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：200
• 期：1-4
• 页码：495-528
• 全文大小：4,803 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Astronomy
  Extraterrestrial Physics and Space Sciences
  Astrophysics
  Planetology
  
• 出版者：Springer Netherlands
• ISSN：1572-9672
• 卷排序：200

文摘

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.KeywordsMarsIonosphereSolar windMAVEN missionElectrostatic analyzer