Energies, wavelengths, and transition rates for Ge-like Mo, Ru, and Rh ions

The energy levels, wavelengths, transition rates, and oscillator strengths have been calculated for the fine-structure levels of the 4s24p2, 4s4p3, 4s24p4d, and 4p4 configurations in Ge-like Mo, Ru, and Rh ions. The fully relativistic multiconfiguration Dirac–Hartree–Fock method, taking correlations within the n = 8 complex, the Breit interaction and the quantum electrodynamics effects into consideration have been used in the calculations. Valence and core–valence electron correlation effects are accounted for through single–double multireference (SD-MR) expansions to increasing sets of active orbitals. Our results are compared with available experimental and other theoretical results, and a good agreement is obtained.