Abstract

Poster - Splinter General   (H 0104 / virtual plenum)

APPARENT CHARGES OF EMITTERS IN LOW-COLLISIONAL PARTIALLY-IONIZED PLASMAS

H. Balthasar(1), E. Wiehr(2) and G. Stellmacher(3)
(1)Leibniz-Institut für Astrophysik Potsdam (2)Institut für Astrophysik Göttingen (3)Institut d'Astrophysique Paris

Partially ionized plasmas (PIP) without collisional equlibrium emit lines with the signature of apparent charges: a non-thermal line broadening caused by magnetic fields occurs even for neutral emitters. Our observations indicate a sequence of line broadening excesses from narrow He-singlet through Fe II (a), NaD1, Mgb2, FeII (b) to broad SrII and Hgamma lines. This is explained by magnetic accelerations during temporal ionization. The resulting velocities are maintained after recombination due to inertia. A similar sequence is obtained for line-shift velocities. These results show that ionization plays a role for the broadening, but we do not deal with a simple dualism of charged and uncharged emitters.