Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sh31a07s&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SH31A-07
Other
2114 Energetic Particles, Heliospheric (7514), 7514 Energetic Particles (2114), 7519 Flares
Scientific paper
Using the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE), we have measured the heavy (Z>=6) element abundances of ~50 small solar energetic particle (SEP) events which occurred between 27 May 1998 and the present. We have classified the events according to their composition and other defining characteristics. With the event-averaged heavy element fluences, we have searched for a dependence of abundances relative to those of the solar photosphere on first ionization potential (FIP). Where possible, we have examined the FIP fractionation effects in the average composition of small SEP events, and discuss the ensuing implications for the origin and acceleration of nuclei in these events. This research was supported by NASA at Caltech (under grant NAG5-6912), JPL, and GSFC.
Christian Eric R.
Cohen M. C.
Cummings Alan C.
Leske Richard A.
Mewaldt Richard A.
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