Dipole and Quadrupole Polarizabilities of Ni II and Parameters of an Effective Potential for Ni I Rydberg States

The Relativistic Configuration Interaction Method has been used to evaluate the dipole and quadrupole polarizabilities of Ni II with the results (for 3d$^{9} \quad^{2}$D$_{3/2})$ of 7.686 au and (for 3d$^{9} \quad^{2}$D$_{5/2})$ 62.94 au respectively. The experimental value for the latter is estimated [2] to be 55(8) au. Our result for the non-adiabatic scalar dipole polarizability ($^{2}$D$_{5/2})$ is 9.243 au (experimental estimate [2] 8.9(1.2) au) and for the off-diagonal tensor dipole polarizability ($^{2}$D$_{5/2})$ 0.220 au (experimental estimate [2] -0.04 au). Significant cancelations occur here [1].\\[4pt] [1] Dipole and Quadrupole Polarizabilities of Ni II and Parameters of an Effective Potential for Ni I Rydberg States, J.Phys.B., submitted for publication.\\[0pt] [2] S L Woods and S R Lundeen, Phys. Rev. A85, 042505 (2012).