A&A Supplement series, Vol. 122, April I 1997, 167-176
Received May 21; accepted July 19, 1996
M.A. Bautista
Department of Astronomy, The Ohio State University, 174 West 18th Avenue, Columbus, OH 43210-1106, U.S.A. internet: bautista@payne.mps.ohio-state.edu
Large-scale close coupling calculations for photoionization cross sections
and dipole
transition probabilities for Fe I are
reported. The calculation included 52 LS terms of the
target ion Fe II dominated by the
configurations 
, and 
. The
eigenfunction expansion of Fe II accounts for the
photoionization of the outer 4s subshell, as well as the open inner 3d subshell,
of the ground state 
of Fe I.
The results include energy levels for 1,117 LS bound states of Fe I,
with 
and 
,
32 316 dipole oscillator strengths for transitions among the LS multiplets,
and detailed photoionization
cross sections, with extensive resonance structures, for all computed
bound states. The present photoionization cross section for the
ground state is up
to three orders of magnitude higher than earlier results from
central field type approximations, but it agrees reasonably well with
the cross section previously calculated using many-body perturbation theory.
keywords: atomic data -- ultraviolet: general -- infrared: general