Nuclear Quadrupole Moment ofYb173

Using separated isotopes, the hyperfine structure of levels due to the configuration $6s6p$ of Yb I was measured. The quadrupole moment of ${\mathrm{Yb}}^{173}$ without shielding correction was found to be 3.1±0.2 b. If the shielding correction factor for the configuration $6s6p$ is assumed to be -0.1, the quadrupole moment $Q\left({\mathrm{Yb}}^{173}\right)=2.8\mathrm{}\pm 0.2$ b is obtained. This brings the spectroscopic value in agreement with the published Coulomb excitation result.