Atomic data from the IRON project. LXVII. Electron impact excitation of Fe XIII

P. J. Storey , C. J. Zeippen (1)

1 Observatoire de Paris

A new R-matrix calculation of rate coefficients for electron collisional excitation of Fe XIII is presented and compared to recent calculations of comparable complexity. At temperatures at which Fe¹²⁺ is typically found in the solar corona, the present results, which use the intermediate coupling frame transformation method, show significant differences compared to some earlier work. We use a large configuration interaction calculation with extensive correlation to assess the accuracy of our and earlier workers' scattering targets.

Full Tables 7 and 8 are only available in full in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/511/A78

Keywords: atomic data; Sun: corona; techniques: spectroscopic

Domains: Sciences of the Universe [physics]; Astrophysics [astro-ph]

P. J. Storey, C. J. Zeippen. Atomic data from the IRON project. LXVII. Electron impact excitation of Fe XIII. Astronomy and Astrophysics - A&A, 2010, 511, ⟨10.1051/0004-6361/200912689⟩. ⟨insu-03625651⟩