Nuclear magnetic moments of 44.3 sAgm107and 39.8 sAgm109

The magnetic hyperfine splitting frequencies ${\nu }_M$=‖g${\mu }_{\mathrm{N}}$ $B_{\mathrm{hf}}$/h‖ of ${}_{}{}^{107}{}_{}{}^{}\mathrm{Ag}_{}^{\mathrm{m}}{}_{}{}^{}$ (E=93 keV; $I^{\pi }$ ${=(7/2)\mathrm{}}^{+}$; $T_{1/2}$=44.3 s) and ${}_{}{}^{109}{}_{}{}^{}\mathrm{Ag}_{}^{\mathrm{m}}{}_{}{}^{}$ (E=88 keV; $I^{\pi }$ ${=(7/2)\mathrm{}}^{+}$; $T_{1/2}$=39.8 s) as dilute impurities in Fe and Ni have been measured with nuclear magnetic resonance on oriented nuclei at temperatures of ∼10 mK as ${\nu }_M$(${}^{107}$ ${\mathrm{Ag}}^{\mathrm{m}}$ Fe)=428.09(9) MHz, ${\nu }_M$(${}^{107}$ ${\mathrm{Ag}}^{\mathrm{m}}$ Ni)=103.19(12) MHz, and ${\nu }_M$(${}^{109}$ ${\mathrm{Ag}}^{\mathrm{m}}$ Ni) =103.26(4) MHz. With the magnetic hyperfine fields, $B_{\mathrm{hf}}$(AgFe)=-446.9(5) kG, $B_{\mathrm{hf}}$(AgNi) =-107.8(2) kG, the magnetic moments of ${}_{}{}^{107}{}_{}{}^{}\mathrm{Ag}_{}^{\mathrm{m}}{}_{}{}^{}$ and ${}_{}{}^{109}{}_{}{}^{}\mathrm{Ag}_{}^{\mathrm{m}}{}_{}{}^{}$ are deduced to be (+)4.398(5) ${\mu }_{\mathrm{N}}$ and (+)4.400(6) ${\mu }_{\mathrm{N}}$, respectively. The reorientation of short-lived nuclear states due to spin lattice relaxation is discussed.