Quadrupole antishielding factors for actinide ions

Perturbation-numerical calculations have been performed using nonrelativistic Hartree-Fock-Slater wave functions to obtain the Sternheimer quadrupole antishielding factor γ∞ for all the tetrapositive ions in the actinide series (90≤Z≤103). For these ions, the nonrelativistic γ∞ values seem to be constant at ~-95. It is estimated that the relativistic effects would increase the |γ∞| value by ~ 65%