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Published September 15, 2000 | Published
Book Section - Chapter Open

The Solar Energetic Particle Event of 6 May 1998


The abundances of elements from helium to iron have been measured in more than a dozen moderate to large solar energetic particle (SEP) events using the Solar Isotope Spectrometer (SIS) on-board the Advanced Composition Explorer (ACE). Time variations within some of these events and from event to event have been reported previously. This paper presents an analysis of the event of 6 May 1998, for which relatively time-independent abundance ratios are found. This event has been considered to be an example of an impulsive event, a gradual event, and as a hybrid of the two. Difficulties with classifying this event are discussed.

Additional Information

© 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under grant NAG5-6912), the Goddard Space Flight Center, and the Jet Propulsion Laboratory.

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