The magnetic moment of the 80-keV $1^{-}$ state of ${}_{}{}^{144}{}_{}{}^{}\mathrm{Pr}$ has been determined using the integral-reversed-field method of the perturbed angular correlations. The value of $\mu =(-4.3\mathrm{}\pm 1.4){\mu }_N$ indicates a structure of the 80-keV level based on the mixing between two shell-model states, both having the odd neutron in $f_{\frac{7}{2}}$ configuration — the odd proton occupying $g_{\frac{7}{2}}$ and $d_{\frac{5}{2}}$ configurations, respectively.

• Received 8 March 1972

DOI:https://doi.org/10.1103/PhysRevC.7.350