SEP Ionic Charge State Composition During the ACE Mission

Details SEP Ionic Charge State Composition During the ACE Mission SEP Ionic Charge State Composition During the ACE Mission

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsh41a..10p&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SH41A-10

Physics

2118 Energetic Particles, Solar, 2162 Solar Cycle Variations (7536)

Scientific paper

The SEPICA instrument on the Advanced Composition Explorer spacecraft has measured ionic charge states of solar energetic particles (SEPs) from late 1997 through 2000. Ionic charge states provide valuable information about acceleration mechanisms for SEPs. These mechanisms may include for example flares, CME-driven shocks, or some combination of the two. The charge state composition of SEP events during the entire observation period will be presented. Ions will include C, O, Ne, Mg and Fe. Results will be examined for long term changes in charge state composition. These will be compared to variations in elemental and isotopic composition that have been observed in the present solar cycle. Implications for acceleration mechanisms will also be discussed.

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