Quadrupole moments of wobbling excitations in 163Lu
Lifetimes of states in the triaxial strongly deformed bands of {sup 163}Lu have been measured in a Gammasphere experiment using the Doppler-shift attenuation method. The bands are interpreted as wobbling-phonon excitations from the characteristic electromagnetic properties of the transitions connecting the bands. Quadrupole moments were extracted for the 0-phonon yrast band and, for the first time, for the 1-phonon wobbling band. The very similar results found for both bands suggest a similar intrinsic structure confirming the wobbling interpretation. While the in-band quadrupole moments for the bands show a decreasing trend towards higher spin, the strength of the inter-band transitions remains constant. Both features can be understood by a small increase in triaxiality towards higher spin. Such a change in triaxiality is also found in cranking calculations, to which the experimental results are compared.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Nuclear Physics; Danish Science Foundation, German Bundesministerium fur Bildung und Forschung Contract 06 BN 907
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 842375
- Report Number(s):
- LBNL-55950; R&D Project: NUCST; TRN: US0503239
- Resource Relation:
- Other Information: Journal Publication Date: 2004
- Country of Publication:
- United States
- Language:
- English
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