High-accuracy calculations of term energies and wavelengths of resonance lines in Zn-like ions have been performed as benchmarks in the quest for accurate theoretical treatments of relativity, electron correlation, and quantum electrodynamic effects in multivalence-electron systems. Computed wavelengths of the $4s^2{}^{1}S_0\text{–}4s4p{}^{1}P_1^o$ transitions are compared with the recent high-resolution wavelength measurements using electron-beam ion traps [E. Träbert, P. Beiersdorfer, and H. Chen, Phys. Rev. A 70, 032506 (2004)], a sensitive means of testing electronic structure theory that has revealed the inadequacies in treating multiple valence electrons in the extant relativistic many-body calculations.

• Received 31 May 2005

DOI:https://doi.org/10.1103/PhysRevA.72.032512