In this work, the Saha equation is solved using atomic data
provided by means of a new relativistic-screened hydrogenic
model based on analytical potentials to calculate the ionization
state and ion abundance for LTE iron plasmas. The plasma effects
on the atomic structure are taken into account by including
the classical continuum lowering correction of Stewart and Pyatt.
For high density, the Saha equation is modified to consider
the degeneration of free electrons using the Fermi–Dirac
statistics instead of the Maxwellian distribution commonly used.
The results are compared with more sophisticated self-consistent
codes.
