Low-frequency band crossing in 171Re
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Bark, R. A.
Dracoulis, G. D.
Stuchbery, A. E.
Byrne, A. P.
Baxter, A. M.
Riess, F
P. K. Weng, P. K.
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The 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.
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Journal of Physics G: Nuclear and Particle Physics
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