Double-beta decay of ${}^{150}$Nd to excited levels of ${}^{150}$Sm

A. S. Barabash, P. Belli, R. Bernabei +23

The $2\nu 2\beta$ decay of ${}^{150}$Nd to the first excited 740.5 keV $0_1^{+}$ level of ${}^{150}$Sm was measured over 5.845 yr with the help of a four-crystal low-background HPGe $\gamma$ s…