Other
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsh32a..12l&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SH32A-12
Other
7513 Coronal Mass Ejections, 7514 Energetic Particles (2114)
Scientific paper
The ionic charge states of solar energetic particles (SEPs) provide information on the source temperatures and conditions of acceleration and transport. We measure SEP charge states at relatively high energies (>15 MeV/nucleon) using the geomagnetic rigidity filter technique, employing data from the Mass Spectrometer Telescope (MAST) on the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX). We have completed ionic charge state measurements for selected elements from carbon to iron for large SEP events from April, August, September, and November of 2001. When we combine our charge state measurements from 14 large SEP events of solar cycle 23, we observe that higher ionic charge states correlate with higher Fe/O abundance ratios. We also investigate correlations with other element abundance ratios and solar longitude. We will discuss interpretations of these results at the meeting. This work is supported in part by NASA under contract NAG5-8877 and grant NAG5-6912.
Cohen M. C.
Labrador Allan Wayne
Leske Richard A.
Mewaldt Richard A.
Stone Edward C.
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