Abstract The mean ionic charges of nitrogen, neon magnesium, silicon, and sulfur accelerated in solar flares have been determined for selected solar energetic particle events in the time period from September 1978 to September 1979. The observations were carried out with the Max-Planck-Institut / University of Maryland ULEZEQ sensor on the ISEE-3 satellite. These measurements complement the previously reported results for carbon, oxygen, and iron. Assuming that the ion charge states are established by equilibration in the hot plasma at the origin of the particles, the observed mean charge states are not compatible with a single temperature. The electron temperature of the plasma as calculated from ionization equilibrium tables range from ∼ 2×106 K for C, N, O, Si, and S to ∼ 4×106 K for Ne and Fe to ∼ 7×106 for Mg in a single flare.
Ionic charge states of N, Ne, Mg, Si and S in solar energetic particle events
Advances in Space Research ; 4 , 2-3 ; 161-164
1984-01-01
4 pages
Article (Journal)
Electronic Resource
English
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