THEMIS-C SST: Electron and Ion Flux Spectrograms from 30 keV to 300 keV

THEMIS-C Solid State Telescope (SST) data provides measurements of superthermal electron and ion intensity (flux per solid angle). The instrument uses two units with opposing sensors, covering up to 92% of the sky, and measures particles primarily between 30-300 keV for ions and 30-100 keV for electrons. This dataset is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Modeling magnetospheric particle populations based on flux measurements across 16 energy bins.
• Analyzing spacecraft contamination reduction techniques based on the quadrapole magnetic field design.
• Studying angular distribution of particles based on data measured over 128 angles.
• Investigating instrument dynamic range performance based on the use of a mechanical attenuator.

Strengths

• The instrument covers a wide energy range, with a maximum capability of 20-6000 keV for ions and 25-1000 keV for electrons.
• Sensor orientation allows for sweeping up to 92% of the sky.
• Data is collected in multiple modes: full distribution (128 angles, 16 bins), reduced distribution (6 angles, 16 bins), and burst mode (64 angles, 16 bins).

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 THEMIS-C spacecraft's Solid State Telescope (SST) instrument.

Freshness

Last updated 2026-03-13 10:46:05.541685; freshness should be verified.