Abstract
Energetic particles produced at a solar flare event are an issue of great theoretical interest. A scenario involving magnetic field reconnection and newborn ions produced by ionization of neutral atoms in the lower corona is proposed by Wu. A series of two-dimensional hybrid simulations has been carried out to investigate this scenario further, and the results are presented in this paper. It is shown that under certain conditions the proposed process can produce protons with energies in the range of 10-100 MeV with a timescale of 10-4 to 10-3 s in a reconnection layer via the so-called ion pickup process. The acceleration process is sensitive to the ambient magnetic field. The maximum energy attainable is also discussed in terms of altitudes above the photosphere on the basis of a certain magnetic field model.
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