Precession measurements have been performed on nuclear-excited nitrogen ions recoiling in magnetized iron employing the implantation perturbed-angular-correlation technique. The transient magnetic field, calibrated with the ${}_{}{}^{16}{}_{}{}^{}\mathrm{N}$($1^{-}$) state, was found to be enhanced by a factor of 2.1(5) over the empirically adjusted Lindhard-Winther prediction. A negative sign was determined for this $g$ factor and a value of $g=+0.9\mathrm{}\left(3\right)\mathrm{}$ for that of the ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}\left({\frac{5}{2}}^{+}\right)$ state.

NUCLEAR REACTIONS ${}_{}{}^{13,14}{}_{}{}^{}\mathrm{C}({}_{}{}^3{}_{}{}^{}\mathrm{He}, p)$, $E_{{}_{}{}^3{}_{}{}^{}\mathrm{He}}=2-4\mathrm{}$ MeV; measured $W\left({\theta }_{\gamma }\right)$ ${}_{}{}^{15,16}{}_{}{}^{}\mathrm{N}$ levels, recoil in magnetized iron, deduced ${\mathrm{H}}_{\mathrm{transient}}$, $g$.

• Received 21 January 1975

DOI:https://doi.org/10.1103/PhysRevC.11.1976