Quadratic Zeeman Effect for Nonhydrogenic Systems: Application to the Sr and Ba Atoms

Abstract

A method has been developed to calculate the spectrum over the $l$- and $n$-mixing regimes of an arbitrary nonhydrogenic system in an external laboratory-strength magnetic field. The original experimental results on Sr and Ba are explained in detail for the first time. The importance of quadratic Zeeman spectroscopy in the quantitative study of atomic structure is made clear.