Many‐Body Perturbation Theory Wavelengths of High‐ n X‐Ray Transitions of Fe and Ni L‐shell Ions

Abstract

Using a combined configuration interaction and many-body perturbationtheory method, we compute the wavelengths of n 鈫?2 (3 鈮?n 鈮?7) transitionsof Fe and Ni L-shell ions. The uncertainties of the results are determinedto be a few m脜 through extensive comparisons with existing laboratorymeasurements. We provide a complete line list of these X-ray transitionsof Fe and Ni and incorporate them in the emissivity tables of theAstrophysical Plasma Emission Database (APED).