Other
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394..351k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 394, no. 1, July 20, 1992, p. 351-356. Research supported by BMFT.
Other
23
Heliosphere, Relativistic Electron Beams, Solar Corpuscular Radiation, Wave Propagation, Electron Scattering, Helios Satellites, Transport Theory, Turbulence Effects
Scientific paper
The intensity and anisotropy time profiles of six relatively small relativistic electron events observed within 0.65 AU by one of the Helios spacecraft were fitted with the model of focused transport under the assumption of a particle means free path lambda independent of the radial distance. For lambda 0.5 MeV electrons it is found that the amount of interplanetary scattering varies from one solar event to the other, with local mean free paths lambda between 0.02 and 0.15 AU. Comparison with previous results obtained close to 1 AU shows that there is no marked variation in the average scattering conditions with radial distance. The amount of scattering for the small electron events presented in this study is not markedly smaller than for large events. This suggests that in this energy range the effects of additional turbulence generated by the solar particles increasing the amount of interplanetary scattering is not important.
Hucke S.
Kallenrode May-Britt
Wibberenz Gerd
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