Hyperfine-structure measurement of the7Sstate of cesium

Abstract

The hyperfine structure of the $7S_{\frac{1}{2}}$ state of ${}_{}{}^{133}{}_{}{}^{}\mathrm{Cs}$ has been measured with the use of laser spectroscopy on a cesium atomic beam. We find the magnetic dipole coupling constant $A=545.90\mathrm{}\left(09\right)\mathrm{}$ MHz. From the amplitude of the hyperfine components we find the ratio of the scalar to tensor polarizabilities ($\left|\frac{\alpha }{\beta }\right|$) for the $6S\to 7S$ transition to be 9.80(12).