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Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei

Werner, V.; Cooper, N.; Regis, J.-M; Rudigier, M.; Williams, Elizabeth; Jolie, J; Cakirli, R B; Casten, R.F.; Ahn, T.; Anagnostatou, V.; Berant, Z; Bonett-Matiz, M.; Elvers, M.; Heinz, A.; Ilie, G.; Radeck, D.; Savran, D.; Smith, M.K.


The B(E2) excitation strength of the first excited 2+ state in even-even nuclei should directly correlate with the size of the valence space and maximize at mid-shell. A previously found saturation of B(E2) strengths in well-deformed rotors at mid-shell is tested through high-precision measurements of the lifetimes of the lowest-lying 2+ states of the Hf168 and W174 rare earth isotopes. Measurements were performed using fast LaBr3 scintillation detectors. Combined with the recently remeasured...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
Source: Physical Review C: Nuclear Physics
DOI: 10.1103/PhysRevC.93.034323
Access Rights: Open Access


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