An investigation of the high chromosphere model for source materials of solar cosmic rays and the mechanism for heavy-ion overabundance

Details An investigation of the high chromosphere model for source materials of solar cosmic rays and the mechanism for heavy-ion overabundance An investigation of the high chromosphere model for source materials of solar cosmic rays and the mechanism for heavy-ion overabundance

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988chjss...7..198h&link_type=abstract

(Chinese Journal of Space Science, vol. 7, July 1987, p. 198-203) Chinese Physics (ISSN 0273-429X), vol. 8, Oct.-Dec. 1988, p. 9

Physics

Abundance, Chromosphere, Energetic Particles, Heavy Ions, Solar Cosmic Rays, Atmospheric Models, Heavy Elements, Ionization Potentials, Solar Corona, Solar Flares

Scientific paper

This paper calculates the temperature of the source material of energetic solar particles by using the average overabundance data of heavy ions in energetic solar-particle events, and proposes a new high chromosphere model to describe the source materials of energetic solar cosmic-ray particles. Solar flare observations showed that the flare acceleration region of the solar cosmic rays was most likely near the lower corona, and could be as high as several tens of thousands of kilometers. It is noted that the source and acceleration region for the solar cosmic rays are not located in the same region. A possible mechanism for heavy-ion overabundance in energetic solar-particle events is proposed. The source material is transported from the chromosphere to the active region by the frozen force-free field of the sun spots. This leads to a large abundance of heavy ions in the acceleration region ahead of the flare, and to overabundance of heavy elements in the cosmic rays behind the flare.

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