Hyperfine anomalies of95Tc−96Tcand106Agm−110Agmusing brute-force nuclear magnetic resonance on oriented nuclei

Abstract

Brute-force nuclear magnetic resonance on oriented nuclei (BF-NMRON) experiments have been performed with 12 T maximum field and at 10 mK. The resonances for ${}^{95,96}\mathrm{Tc}Nb,$ ${}^{106}{\mathrm{Ag}}^{m}Ag,$ and ${}^{110}{\mathrm{Ag}}^{m}\mathrm{Ag}$ have been observed. The magnetic moment of ${}^{106}{\mathrm{Ag}}^{m}$ was determined to be 3.705(4) ${\ensuremath{\mu}}_{N}.$ Comparing the resonance frequencies of BF-NMRON and those of the known NMR-ON results in Fe, the hyperfine anomalies in Fe were determined: ${}^{95}{\ensuremath{\Delta}}^{96}(\mathrm{Tc})=\ensuremath{-}0.026(17)%,$ ${}^{106m}{\ensuremath{\Delta}}^{110m}(\mathrm{Ag})=0.10(6)%.$ The measured hyperfine anomalies are interpreted in terms of a microscopic theory including core polarization and exchange current effects.