Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sh62b02m&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SH62B-02
Physics
2114 Energetic Particles, Heliospheric (7514), 2118 Energetic Particles, Solar, 7514 Energetic Particles (2114), 7519 Flares, 7807 Charged Particle Motion And Acceleration
Scientific paper
We report observations of impulsive 3He-rich solar particle events taken with the Ultra-Low-Energy Isotope Spectrometer (ULEIS) and Solar Isotope Spectrometer (SIS) on ACE during the period August 1997 - April 2001. These instruments measure the energy spectra of 3He, 4He and heavy ions over the range ~0.1-15 MeV/nucleon, making it possible to explore spectra over a broad enough energy range to distinguish different functional forms. Some events have 3He spectra significantly different from 4He and heavy ions. In some cases, the spectra appear to be better fit by functions of particle rigidity than by power laws in kinetic energy per nucleon. We will compare the observed spectral forms with predictions from current theories for impulsive solar particle acceleration.
Cohen M. C.
Cummings Alan C.
Dwyer Joesph R.
Gold Robert E.
Krimigis Stamatios M.
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