Decay-out of 151Tb Yrast Superdeformed Band and Shape Coexistence

Linking transitions between the superdeformed (SD) and the normal deformed (ND) wells have been searched in 151Tb nucleus. Two experiments of 5 and 17 days have been performed with EUROBALL IV. Transitions of 2818 keV and 3748 keV with intensities of about 1 % relative to the yrast SD band have been...

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Bibliographic Details
Published in:AIP conference proceedings 2004-02, Vol.701 (1)
Main Authors: Duchene, G., Robin, J., Odahara, A., Byrski, Th, Beck, F.A., Bednarczyk, P., Curien, D., Courtin, S., Dorvaux, O., Gall, B., Joshi, P., Nourreddine, A., Pachoud, E., Piqueras, I., Vivien, J.P., Twin, P.J., Cullen, D.M., Ertueck, S., King, S.L., Paul, E.S.
Format: Article
Language:English
Subjects:
DYSPROSIUM 152
ERBIUM 155
GAMMA SPECTRA
HEAVY ION FUSION REACTIONS
HOLMIUM 153
KEV RANGE
NUCLEAR DECAY
NUCLEAR PHYSICS AND RADIATION PHYSICS
SHELL MODELS
SUPERDEFORMED NUCLEI
TERBIUM 151
WOODS-SAXON POTENTIAL
YRAST STATES
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Summary:Linking transitions between the superdeformed (SD) and the normal deformed (ND) wells have been searched in 151Tb nucleus. Two experiments of 5 and 17 days have been performed with EUROBALL IV. Transitions of 2818 keV and 3748 keV with intensities of about 1 % relative to the yrast SD band have been observed. Their decay-out properties are discussed in the text. In addition the eight known SD bands have been extended towards higher rotational frequencies where orbital crossings are observed. For the first time, weakly populated collective ND structures, likely triaxial, similar to the ones recently identified in 152Dy, 153Ho and 155Er nuclei have been observed in 151Tb. The SD and ND structures are interpreted in the frame of Woods-Saxon theoretical calculations.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.1691711