| Electron impact excitation of Fe IX |
| P.J. Storey, C.J. Zeippen and M. Le Dourneuf |
| Astronomy & Astrophysics, 2002, Vol.394, p 753 |
We calculate collision strengths and thermally averaged collision strengths
for electron excitation between the one hundred and forty energetically
lowest levels of Fe8+. The scattering target is more elaborate than in any
earlier work and large increases are found in the excitation rates among the
levels of the 3s23p53d electron configuration due to resonance series that
have not been considered previously. The implications for solar and stellar
spectroscopy have been discussed elsewhere (Storey & Zeippen, 2001).
We correct some errors that were made in generating the figures given in
that paper and present corrected versions. Detailed tables of the present
data are available in electronic form at the CDS via anonymous ftp to
cdsarc.u-strasbg.fr (ftp 130.79.128.5) or via
http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/394/753