Computer Science
Scientific paper
Oct 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icrc....5...61m&link_type=abstract
In: International Cosmic Ray Conference, 16th, Kyoto, Japan, August 6-18, 1979, Conference Papers. Volume 5. (A81-12386 02-93) T
Computer Science
Abundance, Isotopes, Solar Cosmic Rays, Solar Flares, Explorer 47 Satellite, Explorer 50 Satellite, Isotopic Enrichment, Oxygen
Scientific paper
Data on solar particle composition from the Goddard experiment on IMP 8 now spans a period of five years. During this time, detailed abundances and spectra have been obtained for elements through the Fe group and isotopic abundances have been obtained for H and He from a number of the largest flare-associated solar particle events. In the energy range 6.7-15 MeV/nucleon, a systematic enhancement of solar cosmic ray over solar photospheric Na, Mg, Al and Si abundances relative to oxygen is shown to exist in all these large flare events. An additional enhancement of abundances in the elements beyond carbon relative to oxygen that is correlated with atomic charge (or mass) occurs in certain events and produces a variability in Fe/O greater than a factor of 10. Summed over these eight large flares, the Be/O and B/O ratios are shown to be less than 0.0002 and Li/O to be less than 0.001 between 4.2 and 15 MeV/nucleon.
McDonald Frank B.
McGuire Robert. E.
von Rosenvinge Tycho T.
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