THEMIS-B SST: Electron and Ion Flux Spectrograms (30-300 keV)

THEMIS-B Solid State Telescope (SST) data provides ground-calculated energy flux spectrograms for superthermal electrons and ions. The instrument measures particles between 30-300 keV for ions and 30-100 keV for electrons, with data captured over 128 angles and 16 energy bins for full distributions. This dataset is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Analyzing electron flux variations based on energy bins from 30-100 keV
• Studying ion composition dynamics based on measurements from 30-300 keV
• Modeling magnetospheric particle distributions based on angular measurements over 128 angles
• Investigating instrument performance and magnetic contamination reduction based on quadrapole broom magnet design

Strengths

• The instrument covers a wide energy range, with ion sensors capable of measuring particles from 30-300 keV and electron sensors from 30-100 keV
• The sensor orientation allows for sweeping out up to 92% of the sky, providing broad spatial coverage
• Full distribution data is measured over 128 angles and 16 energy bins, offering detailed angular resolution

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• The data is stored in BIN format, which may require specialized tools for access and analysis

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measured by the THEMIS-B spacecraft's Solid State Telescope (SST) instrument.

Freshness

Last updated 2026-03-13 10:50:59.969786