A Search for ^7Be in Solar Energetic Particle Events
The LDEF spacecraft measured an unexpectedly high level of ^7Be, presumably swept up from the residual atmosphere. However, it is unclear whether the atmospheric ^7Be is due to particles originating in nuclear reachtions at the Sun, or due to secondary fragments from coll isions between energetic particles (solar and galactic) and the atmosphere. The Solar Isotope Spectrometer (SIS) on ACE has been measuring solar energetic particles since launch in 1997. We will present the results of a search for solar ^7Be above about 5 MeV/nucleon with the SIS instrument.
Additional Information© Copernicus Gesellschaft 2001. This research was supported by the National Aeronautics and Space Administration at the Goddard Space Flight Center, the California Institute of Technology (under grant NAGS-6912), and the Jet Propulsion Laboratory.
Published - 2003-05.pdf