Bark, R. A.Dracoulis, G. D.Stuchbery, A. E.Byrne, A. P.Baxter, A. M.Riess, FP. K. Weng, P. K.2025-12-312025-12-310954-3899ORCID:/0000-0002-0198-9901/work/165894357https://hdl.handle.net/1885/733798082The decay sequence based on the 5/2+(402) proton orbital has been identified in 171Re up to spin 41/2. An anomalous upbend in the alignment is observed below the expected backbend, a phenomenon similar to that observed in the yrast sequence of 172Os. The properties of the 5/2+(402) band can be understood in terms of two crossings, one at low spin with a band based on a deformed intruder configuration, the second at higher spin with a band composed of aligned i13/2 neutrons.en198910.1088/0954-3899/15/8/0050039124507