Fine-structure in 3d4 States of Highly Charged Ti-like Ions

A remarkable improvement of ab initio calculations was obtained for wavelengths of (3d4) J = 3 2 forbid den transition. Present calculations reduced the long-standing discrepancy from measurements down to less than 0.2% for most high-Z titanium-like ions. In the present calculations, a large extent of configuration space was included so that most important many-body effects were taken into account. To this end, the linearized second-order Brillouin-Wigner perturbation theory was employed with optimized spin-orbitals. Transition probability and atomic g-factor were also calculated with the improved atomic wave functions.

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