Onset of collectivity in the ground-state band ofCr50

Transient field precessions of the first excited states in ${}_{}{}^{50}{}_{}{}^{}\mathrm{Cr}$ have been measured. The states were excited by the inverse ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ ${(}^{40}$Ca, 2p${)}^{50}$Cr reaction and the recoil nuclei traversed a thick gadolinium foil, where they experienced the rotation. The observed precessions, for the $2^{+}$,$4^{+}$,$6^{+}$,$8^{+}$ states of the ground-state band, were equal within experimental error indicating these states have g factors similar to that of the $2^{+}$ state value of 0.55±0.10 measured previously. This feature is contrary to the predictions of the shell model and suggests a higher collectivity for the ground-state band. Limited results were also obtained for the cross conjugate nucleus ${}_{}{}^{46}{}_{}{}^{}\mathrm{Ti}$ supporting this conclusion.