Impact of atomic collisional and radiative processes on modeling and spectroscopy of highly ionized plasma

The reliability and scalability of atomic data used in the ionization calculations of K- and L-shell moderate-Z elements are of great concern. It is critical to include an adequate number of excited levels per ion to generate synthetic spectra with which to diagnose plasma conditions. Our model include all dominant processes such as collisional excitation, ionization and recombination and opacity effects by coupling photoexcitation and photoionization for non-LTE plasmas. Experimental data of complex L-shell ions provide a wealth of information about plasma conditions. Analysis of our spectra using self consistently generated data from state-of-the-art codes show excellent agreement with experiment.