Hyperfine structure in ${}^{229g}$Th${}^{3+}$ as a probe of the ${}^{229g}$Th $\to$ ${}^{229m}$Th nuclear excitation energy

K. Beloy

We identify a potential means to extract the ${}^{229g}$Th $\to$ ${}^{229m}$Th nuclear excitation energy from precision microwave spectroscopy of the $5F_{5/2,7/2}$ hyperfine m…