Measurement of the Magnetic Moment and Lifetime of the 1.131-MeV Level inF18

The magnetic moment of the 1.131-MeV level in ${\mathrm{F}}^{18}$ has been measured, using the ${\mathrm{O}}^{16}({\mathrm{He}}^3, p){\mathrm{F}}^{18}$ reaction and the differential time-delay technique, as $\mu =+(0.568\mathrm{}\pm 0.013)J$. The mean lifetime of this level has been remeasured. The measured magnetic moment agrees, to within the experimental uncertainties, with that predicted by the nuclear shell model for a level of spin-parity $5^{+}$ resulting from the $1{d_{\frac{5}{2}}}^2$ configuration. Some information is also obtained about the effect on the original nuclear alignment of the stopping process for ${\mathrm{F}}^{18}$ ions of approximately 1-MeV energy in copper.