Lifetimes and electromagnetic transition strengths in ^{155}Dy
- P., Petkov
- M. S., Yavahchova
- O., M\uf6ller
- A., Dewald
- D., Tonev
- B., Saha
- A., Fitzler
- K., Jessen
- T., Klug
- S., Heinze
- J., Jolie
- P., von Brentano
- N., Goutev
- D., Bazzacco
- C. A., Ur
- E., Farnea
- M., Axiotis
- Lunardi, Santo
- G., de Angelis
- D. R., Napoli
- N., Marginean
- T., Martinez
- M. A., Caprio
Publication date
January 2013
DOI Publisher
American Physical Society (APS) ISSN
0556-2813Abstract
Recoil distance Doppler-shift and Doppler-shift attenuation lifetime measurements were carried out for levels in Dy-155 through the coincident detection of. rays. Twenty-six lifetimes, most of them for the first time, were determined using the differential decay curve method for the analysis of the data. At low and medium spins, particle-plus-triaxial-rotor calculations reveal different quadrupole deformations for the one-quasineutron bands in this transitional nucleus. At high spin, the reduced B(E2) transition probabilities confirm with a better precision the results of a previous study implying decreased collectivity with increasing spin
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