Goals and Methods |
Hummer.DG, Berrington.KA, Eissner.W, Pradhan.AK, Saraph.HE, Tully.JA |
Astronomy & Astrophysics, 1993, Vol.279, No.1, pp.298-309 |
The IRON Project has the goal of computing on a large scale
electron excitation cross sections and rates of astrophysical
and technological importance, using the most reliable
procedures currently available. Radiative transition
probabilities and photoionization cross sections not known from
other sources e.g. from the Opacity Project, will also be
presented. Although the major effort will be for ions of the
iron-group elements, other ions of astrophysical interest will
also be included. In this introductory paper models and
procedures to be used are summarized and the approximations are
discussed. As an example of our computational procedures,
typical results for fine structure transitions involving
electron collisions with Fe XVIII ions and radiative data from
Fe XVII are presented.