Observations of high-spin yrast cascade in 50Cr

A ground-state band with spin up to $J^{\pi }={12}^{+}$ was observed in ⁵⁰Cr from the reactions ⁴⁰Ca(¹⁶O, 2pα)⁵⁰Cr, ²⁴Mg(³²S, 2pα)⁵⁰Cr, ⁴⁰Ca(¹⁴N, 3pn)⁵⁰Cr, and ⁴⁰Ca(¹²C, 2p)⁵⁰Cr. Spin and parity assignments were made from γ-γ coincidences, angular distributions, and linear-polarization measurements. The higher-spin states are reasonably well reproduced in the (1f_7/2)ⁿ shell-model frame while discrepancies exist for the lower ones. These levels have collective features at lower excitation but very pure shell-model characteristics towards the maximum spin expected in the (1f_7/2)ⁿ space.