Physics
Scientific paper
Aug 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icrc....5.1767m&link_type=abstract
In: International Cosmic Ray Conference, 14th, Munich, West Germany, August 15-29, 1975, Conference Papers. Volume 5. (A76-26851
Physics
7
Particle Motion, Solar Cosmic Rays, Solar Electrons, Solar Flares, Solar Protons, Transport Properties, Data Reduction, Frequency Distribution, Particle Energy, Relativistic Particles, Solar Corona, Statistical Analysis
Scientific paper
A statistical study on the propagation characteristics of about 80 solar particle events is carried out using the data from Goddard cosmic-ray experiments. It is found that for particles near onset as well as maximum particle intensity at 1 AU, a linear relation exists between the velocity and the traveled distance. This holds for both relativistic electrons (0.5-1.1 MeV) and nonrelativistic protons (4-80 MeV). The relation indicates that particle propagation is independent of both rigidity and energy. It is shown that in general interplanetary diffusion plays a minor role in particle propagation during the initial phase of a flare effect. A study of the onset characteristics indicates that the speed of particle transport in the corona may be as high as 40 deg/hr. This behavior can not be accounted for by either magnetic-field or curvature drift.
Ma Sung L. S.
McDonald Frank B.
Van Hollebeke M. A.
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