Abstract
Energies, transition rates, line strengths and lifetimes have been computed for all levels of the 4p6 and 4p54d configurations of W38+ by using the multi-configuration Dirac–Hartree–Fock (MCDHF) method as well as relativistic many-body perturbation theory. We investigate systematically correlation, relativistic and quantum electro-dynamical (QED) effects of different properties, including excitation energies and transition rates. We demonstrate that it is important to include the core-valence correlation of rather deep subshells (including 3d and 3p) to reach close to spectroscopic accuracy for the transition energies. We also show that high-multipole transitions (E3, M2) are important for the lifetime of some metastable levels of 4p54d (). The present results are in good agreement with experiments and of considerably higher accuracy than those achieved in previous theoretical works.
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