HAL : in2p3-00207925, version 1

DOI : 10.1103/PhysRevC.77.014308

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Physical Review C 77 (2008) 014308

Extended investigation of superdeformed bands in $^{151,152}$Tb nuclei

J. Robin1, Th. Byrski1, G. Duchêne1, F.A. Beck1, D. Curien1, N. Dubray1, J. Dudek1, A. Góźdź, A. Odahara1, N. Schunck1, N. Adimi, D.E. Appelbe, P. Bednarczyk1, A. Bracco, B. Cederwall, S. Courtin1, D. M. Cullen, O. Dorvaux1, S. Ertück, G. De France1, B. Gall1, P. Joshi1, S. L. King, A. Korichi2, K. Lagergren, G. Lo Bianco, S. Leoni, A. Lopez-Martens2, S. Lunardi, B. Million, A. Nourredine1, E. Pachoud1, E. S. Paul, C. Petrache, I. Piqueras1, N. Redon3, A. Saltarelli, J. Simpson, O. Stezowski3, R. Venturelli, J.P. Vivien1, K. Zuber

(2008)

A detailed study of known and new SD bands in Tb isotopes has been performed with the use of the EUROBALL IV -ray array. The high-statistics data set has allowed for the extension of known SD bands at low and high spins by new -ray transitions. These transitions, as it turns out, correspond to the rotational frequencies where the principal superdeformed gaps (Z=66,N=86) close giving rise to up- or down-bending mechanisms. This enables to attribute the underlying theoretical configurations with much higher confidence as compared to the previous identifications. Five new SD bands have been discovered, three of them assigned to the 152Tb and the two others to the 151Tb nuclei. Nuclear mean-field calculations have been used to interpret the structure of known SD bands as well as of the new ones in terms of nucleonic configurations.

1 :	DRS-IPHC - Département Recherches Subatomiques
2 :	CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
3 :	IPNL - Institut de Physique Nucléaire de Lyon

Thème(s)

:

Physique/Physique Nucléaire Expérimentale

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Contributeur : Dominique Girod <>

Déposé pour le compte de : Jerôme Robin <>

Soumis le : Vendredi 15 Février 2008, 15:54:45

Dernière modification le : Vendredi 15 Mai 2009, 10:37:38