Universal Effective Charges in the $sd$ and $fp$ Shells

T. H. Ogunbeku, J. M. Allmond, T. J. Gray +79

The 247-keV state in ${}^{54}$Sc, populated in the ${\hat{I}}^2$ decay of ${}^{54}$Ca, is reported here as a nanosecond isomer with a half-life of 26.0(22) ns. The state is interpreted as the $…