Yb176(t, p)Yb178reaction

Abstract

Fourteen levels up to 3.1 MeV in $^{178}\mathrm{Yb}$ have been identified using the $^{176}\mathrm{Yb}(t, p)$ reaction. Measured angular distributions were compared with the results of distorted-wave Born approximation calculations. For six levels we make ${J}^{\ensuremath{\pi}}$ assignments based on $L$ values and the systematics of the lighter even Yb isotopes. The first three members of the ground-state band, the first two members of the excited ${K}^{\ensuremath{\pi}}={0}^{+}$ band, and the ${2}^{+}$ $\ensuremath{\gamma}$-vibrational state are suggested by the systematics. Based only on $L$ values, ${J}^{\ensuremath{\pi}}$ assignments are made for two states and tentative assignments are suggested for four other states. The $Q$ value for the $^{176}\mathrm{Yb}(t, p)^{178}\mathrm{Yb}$ reaction is also reported.