New results on the superdeformed 196 Pb nucleus: decay of the excited bands to the yrast band

S. Bouneau, F. Azaiez,J. Duprat, I. Deloncle, M.-G. Porquet, U.J. van Severen, T. Nakatsukasa,M.-M. Aléonard,A. Astier, G. Baldsiefen,C.W. Beausang,F.A. Beck,C. Bourgeois,D. Curien, N. Dozié,L. Ducroux, B.J.P. Gall,H. Hübel, M. Kaci,W. Korten,M. Meyer, N. Redon, H. Sergolle,J.F. Sharpey-Schafer

Zeitschrift für Physik A Hadrons and nuclei（2014）

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摘要

The study of the superdeformed 196 Pb nucleus has been revisited using the EUROGAMphase 2 array. In addition to the known yrast and two excited SD bands, a third excited SD band has been found. All of the three excited bands were found to decay to the yrast SD band through presumably E1 transitions. Comparisons with calculations using RPAapproximation indicate that the excited bands can be interpreted as octupole-vibrational structures.

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关键词

27.80.+w,23.20.Lv,21.10.Re

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