Nonequilibrium ionization and ambipolar diffusion in solar magnetic flux emergence processes D. Nóbrega-Siverio, F. Moreno-Insertis, J. Martínez-Sykora, M. Carlsson and M. Szydlarski A&A, 633 (2020) A66 Published online: 14 January 2020 DOI: 10.1051/0004-6361/201936944