Detailed term accounting(DTA) model is applied to calculate the radiative opacity of hot iron plasma,which has a temperature of 20 eV and a density of 0.01 g/cm³.In case of local thermodynamic equilibrium(LTE),Saha equation is used to calculate the populations of iron ions.The energy levels and oscillator strengths of bound-bound transitions are obtained by the multiconfiguration Hartree-Fock(MCHF) method.The Doppler broadening and electron impact broadening have been considered and the Voigt line profile has been applied in our calculation.We use the detailed configuration accounting(DCA) model and average atom model(AA) to obtain the bound-free and free-free absorptions respectively.The comparison between the present work result and Los Alamos National Laboratory(LANL) result shows a good agreement.

Extensive configuration interaction (CI) wave functions are determined using MCHF method and are used to calculate relativistic and non-relativistic energy levels.Agreement is obtained between the calculated and experimental energy levels.Relativistic and non-relativistic electric dipole,magnetic dipole and electric quadrupole oscillator strengths have also been calculated using the CI wave functions.There is a general agreement between the length form and the velocity form.