Ionization states of heavy elements observed in the 1974 May 14-15 anomalous solar particle event

Details Ionization states of heavy elements observed in the 1974 May 14-15 anomalous solar particle event Ionization states of heavy elements observed in the 1974 May 14-15 anomalous solar particle event

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245l..45m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 245, Apr. 1, 1981, p. L45-L49.

Astronomy and Astrophysics

Astrophysics

15

Abundance, Energetic Particles, Heavy Ions, Solar Corona, Solar Flares, Solar Wind, Gas Ionization, Helium Ions, Iron, Metal Ions, Solar Protons

Scientific paper

The charge states of heavy ions accelerated in the (He-3)-Fe-rich solar particle event of May 14-15, 1974 have been determined by the use of using data from the University of Maryland/Max-Planck-Institut experiment on IMP 8. In addition to Fe(+11,12), it is found that both O(+5) and Fe(+16,17,18) are also present, suggesting variations in coronal temperatures over a range from approximately 400,000 to 5,000,000 K. The presence of O(+5) and Fe(+16-18) may be explained by a resonant plasma heating mechanism proposed by Fisk (1978) to account for the enhancements of He-3 and Fe.

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