HR: 14:00h
AN: SM23C-02 INVITED    [Abstracts]
TI: Trapped Solar Energetic Particles in the Inner Magnetosphere in Solar Cycle 23
AU: * Mazur, J E
EM: joseph.mazur@aero.org
AF: The Aerospace Corporation, 15049 Conference Center Drive, Chantilly, VA 20151, United States
AU: Blake, J B
EM: jbernard.blake@aero.org
AF: The Aerospace Corporation, 2350 E. El Segundo Blvd., El Segundo, CA 90245, United States
AU: Hudson, M K
AF: Dartmouth College, Department of Physics, Hanover, NH 03755, United States
AU: Mason, G M
EM:     Glenn.Mason@jhuapl.edu
AF: Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, United States
AB: A wide range of instrumentation on spacecraft such as SAMPEX, Polar, and HEO vehicles has been sampling the diverse trapped and transient particle populations in the Earth's magnetosphere during solar cycle 23. We will review the observational facts of the intriguing phenomenon of the creation of new radiation belts near L-shells of 2-3 during intense SEP events and CME-related shocks. New radiation belts in this region of the magnetosphere had been glimpsed with shorter-lived missions as long as 40 years ago. In the talk we will use magnetospheric particle sensors with wide energy coverage and mass composition, combined with upstream solar wind and SEP monitors, to survey the conditions that might be necessary to form these new belts. These necessary ingredients appear to include a source population of solar particles, access to low L-shells due to supressed particle cutoffs, and trapping due to non-adiabatic effects. The presence of ~1 MeV/n ions up to iron in some events provides a new diagnostic of the entire trapping process. We will review the published instances of the new belts, and examine the maximum observed energies of the trapped heavy ions.
DE: 2114 Energetic particles (7514)
DE: 2139 Interplanetary shocks
DE: 2716 Energetic particles: precipitating
DE: 2720 Energetic particles: trapped
DE: 2774 Radiation belts
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting