Phys. Rev. Lett. 85, 2454–2457 (2000)Signature Inversion Caused by Triaxiality and Unpaired Band Crossings in 72BrReceived 8 March 2000; published in the issue dated 18 September 2000 High-spin states in 72Br were studied with the EUROBALL III spectrometer using the 40Ca(40Ca,α3p1n) reaction. The negative-parity band observed in this experiment displays a signature inversion around spin I = 16. The interpretation within the cranked Nilsson-Strutinsky approach shows that this signature pattern is a signal of a substantial triaxial shape change with increasing spin where the nucleus evolves from a triaxial shape with rotation about the intermediate axis at low spin through a collective prolate shape to a triaxial shape but with rotation about the shortest principal axis at high spin. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.2454
DOI:
10.1103/PhysRevLett.85.2454
PACS:
21.10.Re, 23.20.En, 23.20.Lv, 27.50.+e
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