High-energy particles very near the sun

Details High-energy particles very near the sun High-energy particles very near the sun

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ippe.conf..117g&link_type=abstract

In its Interplanetary Particle Environment. Proceedings of a Conference p 117 (SEE N89-28454 22-90)

Mathematics

Mathematical Models, Radiation Damage, Solar Flares, Solar Probes, Solar Protons, Spacecraft Environments, Sun, Fluence, Hazards, Jupiter (Planet), Space Exploration

Scientific paper

NASA's long range plans include a Solar Probe (Star Probe) mission in which a spacecraft is placed in an eccentric orbit with perihelion at four solar radii. As part of the study effort for this mission, a Solar Probe Environment Workshop was sponsored by JPL. The report of this committee was issued in September 1978 as JPL Publication 78-64. A brief abstract of this document is given. There are considerable uncertainties in the models of solar energetic particle release and transport. The committee addressed this problem by using different modelling techniques when possible to provide a cross-check on the estimates. These models were used to extrapolate observation at 1 AU to the vicinity of the Sun. Additionally, the occurrence of a flare of a given magnitude must be estimated on a statistical basis. Therefore, it is possible to state a likelihood that the fluxes and fluences will be less than a certain magnitude, but in the event of an extremely large solar flare (occurrence of perhaps once a decade, e.g., August 4, 1972) it is likely that the hazard would be insurmountable. A brief first look indicates that the near-solar particle environment is not a worse hazard than Jupiter.

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