The Acceleration of Ions in Solar Flares During Magnetic Reconnection

الأصل · EN

The acceleration of solar flare ions during magnetic reconnection is explored via particle-in-cell simulations that self-consistently follow the motions of both protons and α particles. We demonstrate that the dominant ion heating during reconnection with a guide field (a magnetic component perpendicular to the reconnection plane) results from pickup behavior during the entry into reconnection exhausts. In contrast with anti-parallel reconnection, the temperature increment is dominantly transverse, rather than parallel, to the local magnetic field. The comparison of protons and alphas reveals a mass-to-charge (M/Q) threshold in pickup behavior that favors heating of high M/Q ions over protons, which is consistent with impulsive flare observations.