  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 $\alpha$ 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.
