Abstract
Energy spectra of the 3d4, 3d34s, 3d34p, and 3d34d configurations of W LIII are calculated using the ab initio multi-configuration Dirac-Fock method. The correlations within the n = 9 complex, n being the principal quantum number of the outermost electron are accounted for in a systematic way and the Breit interaction and quantum electrodynamics effect are evaluated. Wavelengths, oscillator strengths, electric dipole, electric quadrupole, magnetic dipole, and magnetic quadrupole emission transition rates regarding these levels are obtained. The Flexible Atomic Code (FAC) calculations are further performed to support these data. Results are compared with other available theory reported in the literature as well as the recommended experimental data listed in the Atomic Spectra Database (ASD) of the National Institute of Standards and Technology (NIST) online database. Satisfactory agreement is found between them. In light of these findings, the present complete and consistent results can aid line identifications in extreme ultraviolet (EUV) spectra and should be beneficial in fusion plasma research.
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