Signature inversion caused by triaxiality and unpaired band crossings in 72Br

C. Plettner, I. Ragnarsson, H. Schnare, R. Schwengner, L. Käubler, F. Dönau, A. Algora, G. de Angelis, D. R. Napoli, A. Gadea, J. Eberth, T. Steinhardt, O. Thelen, M. Hausmann, A. Müller, A. Jungclaus, K. P. Lieb, D. G. Jenkins, R. Wadsworth, A. N. Wilson

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Abstract

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.

Original languageEnglish
Pages (from-to)2454-2457
Number of pages4
JournalPhysical review letters
Volume85
Issue number12
DOIs
Publication statusPublished - Sep 18 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Plettner, C., Ragnarsson, I., Schnare, H., Schwengner, R., Käubler, L., Dönau, F., Algora, A., de Angelis, G., Napoli, D. R., Gadea, A., Eberth, J., Steinhardt, T., Thelen, O., Hausmann, M., Müller, A., Jungclaus, A., Lieb, K. P., Jenkins, D. G., Wadsworth, R., & Wilson, A. N. (2000). Signature inversion caused by triaxiality and unpaired band crossings in 72Br. Physical review letters, 85(12), 2454-2457. https://doi.org/10.1103/PhysRevLett.85.2454