Voyager 1 LECP: Daily Average Interplanetary Charged Particle Data

Daily averaged count rates for eleven differential energy proton/ion channels (30 keV - 20 MeV) and one integral channel (>70 MeV protons) from the Low Energy Charged Particle instrument on Voyager 1. The data is averaged over 24-hour intervals, with times given in SCET-UT and count rates in counts per second. The dataset was produced by NASA and includes passbands, mean energies, geometric factors, and flux conversion factors.

Use Cases

• Analyzing interplanetary charged particle flux variations based on daily averaged count rates.
• Studying the energy spectrum of protons and ions in the 30 keV to 20 MeV range.
• Converting instrument count rates to differential energy fluxes using the provided conversion factors.
• Investigating long-term trends in energetic particle populations in the outer solar system.

Strengths

• Data covers eleven differential energy channels and one integral channel, providing a multi-energy view.
• Includes detailed metadata for flux conversion: passbands, mean energies, geometric factors, and conversion factors.
• Statistical uncertainty for each channel is provided, based on the inverse square root of total counts.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-03-13 08:34:57.982240; freshness should be verified.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data collected by the Low Energy Charged Particle (LECP) instrument on the Voyager 1 spacecraft.

Geography

Interplanetary space (Voyager 1 trajectory)