Energy dependence of the ionic charge state distribution during the November 1997 solar energetic particle event

Details Energy dependence of the ionic charge state distribution during the November 1997 solar energetic particle event Energy dependence of the ionic charge state distribution during the November 1997 solar energetic particle event

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..145m&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 2, p. 145-148

Astronomy and Astrophysics

Astrophysics

60

Solar Physics, Astrophysics, And Astronomy: Energetic Particles, And Astronomy: Flares, And Astronomy: Instruments And Techniques, Interplanetary Physics: Energetic Particles, Solar

Scientific paper

Ionic charge state distributions for a variety of species, such as C, O, Ne, Mg, Si and Fe were obtained with the Solar Energetic Particle Ionic Charge Analyzer (SEPICA) on ACE for the strongest of a series of energetic particle events after the November 4 and 7, 1997, flares. The capabilities of SEPICA allow a much more detailed analysis of the charge distributions than previous instrumentation. Over the energy range from ~0.2 to 1 MeV/Nuc a trend is observed that shows charge states increasing with energy, in particular for Mg, Si and Fe. In addition, for Fe a mixed charge state distribution with a distinct peak at lower charge states (10-14) is observed simultaneously with a tail reaching to charge states up to ~20. This may be an indication of a mixture of different energetic particle populations.

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