Electron impact excitation of fine-structure transitions in the ground
configuration of Fe XII |

A.M. Binello, H.E. Mason and P.J. Storey |

Astronomy & Astrophysics Supplement Series, 1997, Vol.127, pp.545-553 |

In the framework of the *IRON Project* we have performed new, fully
quantum mechanical atomic calculations for the Fe XII (Fe)
coronal ion. Energy levels, oscillator strengths and spontaneous decay
transition probabilities have been computed by including extensive
configuration interaction (CI) and relativistic effects in the solution of
the atomic structure problem. The *R*-matrix approach has been employed
to solve the electron scattering problem and generate a new set of
collisional atomic data. Results are discussed for the ten fine-structure
forbidden transitions in the 3s3p ground configuration of Fe XII,
and compared with previous calculations.

2006-10-25