COLLISIONAL RADIATIVE MODEL FOR HEAVY-ATOMS IN HOT NON-LOCAL-THERMODYNAMICAL-EQUILIBRIUM PLASMAS

A collisional radiative model for calculating non-local-thermodynamica l-equilibrium (non-LTE) spectra of heavy atoms in hot plasmas has been developed, taking into account the numerous excited and autoionizing states. This model uses superconfigurations as effective levels with a n iterative procedure which converges to the detailed configuration sp ectrum. The non-LTE opacities and emissivities may serve as a reliable benchmark for simpler on-line models in hydrodynamic code simulations . The model is tested against detailed configuration calculations of s elenium and is applied to non-LTE optically thin plasma of lutetium.