Microwave spectroscopy of High-L n$=$9 levels of Nickel: Polarizabilities and Moments of the Ni$^{+}$ ion*

The complete pattern of binding energies of n$=$9 Rydberg levels of Nickel with L $=$ 6, 7, and 8 has been measured precisely using the microwave/RESIS technique. Analysis of the level pattern using the adiabatic effective potential model [1] yields measurements of several significant properties of the Ni$^{+}$ core ion. Among these are the permanent electric quadrupole and hexadecapole moments, the magnetic dipole moment, the scalar and tensor dipole polarizabilities, and the scalar quadrupole polarizability.\\[4pt] [1] Shannon L. Woods and S.R. Lundeen, Phys. Rev. A 85, 042505 (2012).