Ionication States of Solar-Flare Particles

It is thought that observed properties for the chemical composition of solar-flare particles give some clue to understand the mechanism for these particles to be accelerated in the flare regions and the outer corona of the sun. In this paper, the most probable ionization states of these particles are estimated for them in these regions before acceleration. Then, it is shown that their ionization states play the key role to form the chemical composition of solar-flare particles which shows the enhancement of heavy nuclei up to the iron group ones.