2006 Articles

Importance of Configuration Interaction for Accurate Atomic Data: Fluorescence Yields of K-Shell Vacancy, Lithium-Like Ions

Savin, Daniel Wolf; Gorczyca, T. W.; Dumitriu, I.; Hasoǧlu, M. F.; Korista, K. T.; Badnell, N. R.; Manson, S. T.

We demonstrate that the inclusion of configuration interaction (CI) results in significant values for the K-shell fluorescence yields of Li-like ions, which are zero in a single-configuration approach. Modeling codes for simulating
supernova remnants under nonequilibrium ionization conditions or photoionized plasmas such as active galactic nuclei or X-ray binaries need to be updated accordingly. A two-parameter fitting formula for the fluorescence
yields has been developed. The generality of important CI effects on atomic calculations is pointed out.