Solar Proton Events during the Past Three Solar Cycles Open PDF Document Details Document Type Technical Report Publication Date Dec 01, 1989 Accession Number ADA231453 Entities People D. F. Smart M. A. Shea Organizations Air Force Systems Command Tags Communities of Interest Space DTIC Thesaurus Topics Air Force Artificial Satellites Cosmic Rays Crystal Structure Data Sets Databases Detection Detectors Ionization Magnetic Fields Particle Flux Polar Cap Solar Activity Solar Cosmic Rays Solar Flares Spacecraft Spacecraft Orbits