Inferred charge states of high energy solar particles from the Solar Isotope Spectrometer on ACE

Details Inferred charge states of high energy solar particles from the Solar Isotope Spectrometer on ACE Inferred charge states of high energy solar particles from the Solar Isotope Spectrometer on ACE

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..149c&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 2, p. 149-152

Astronomy and Astrophysics

Astrophysics

38

Interplanetary Physics: Energetic Particles, Solar, Solar Physics, Astrophysics, And Astronomy: Corona, And Astronomy: Flares

Scientific paper

The large solar event on November 6, 1997, was enriched in heavy elements (Fe/O~1) with very hard energy spectra (power law index of -2). There was also a large enrichment in heavier isotopes, suggesting unusually strong charge to mass (Q/M) fractionation (~(Q/M)-7). Assuming that the fractionation is dominated by Q/M and first ionization potential (FIP) related processes, we have inferred the charge states of twelve elements with energies of 12-60 MeV/nucleon. These results suggest a source temperature of 3-6×106K, significantly higher than deduced at lower energies.

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