FAST TEAMS: Ion Energy-Pitch Angle Distributions from Satellite Measurements

FAST satellite TEAMS instrument data providing three-dimensional ion distribution functions. The instrument measures energy per charge from 1.2 eV/q to 12 keV/q, mass per charge, and incidence angles with high temporal resolution as low as 0.08 ms. Data is produced by NASA and was last updated in March 2026.

Use Cases

• Modeling ion dynamics in auroral regions based on high-resolution energy and pitch angle measurements.
• Analyzing minor ion species composition based on high mass resolution modes described.
• Studying temporal evolution of plasma distributions based on sub-second time resolution capabilities.

Strengths

• High sensitivity mass-resolving spectrometer with instantaneous 360° field of view.
• Multiple operational modes including Survey, High Mass, and Burst with time resolution down to 0.08 ms.
• Energy range spans from 1.2 eV/q to 25 keV/q after acceleration.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measured by the Time-of-flight Energy Angle Mass Spectrograph (TEAMS) instrument on the FAST satellite.

Time Range

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Freshness

Last updated 2026-03-13 07:35:05.853359; freshness should be verified

Geography

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