[Müller-Mellin 1993 a]
R. Müller-Mellin, B. Heber, M.-B. Kallenrode,
H. Kunow and G. Wibberenz
Solar energetic particles in the intermediate region of the heliosphere.
Advances in Space Research 13, 85-93. 1993
Nine particle events are discussed in detail. Spectral information as well as composition measurements are used to determine the source of the particle increases: solar, interplanetary, and Jovian. The few prompt events can be fitted with diffusive interplanetary propagation models, yielding radial mean free paths in the range lambda(r) = 0.05 to 0.15 AU. The shock-related events are dominant at these intermediate distances, with particularly high intensities of MeV-electrons and above 30 MeV protons at merged or double shocks. A new feature are slowly-varying populations with long time scales neither related to prompt events nor to local shock effects.
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Last update: 02-MAR-1997