Probing the Linewidth of the 12.4-keV Solid-State ${}^{45}$Sc Isomeric Resonance

Peifan Liu, Miriam Gerharz, Berit Marx-Glowna +37

The ${}^{45}$Sc nuclear transition from the ground to the isomeric state at 12.389~keV, with a lifetime of 0.46~s, exhibits an extraordinarily narrow natural width of 1.4~feV and a q…