Lifetime measurements of excited states in $^{162}$W and $^{164}$W and the evolution of collectivity in rare-earth nuclei
- Doncel, M.
- Cederwall, B.
- Qi, C.
- Li, H.
- Jakobsson, U.
- Auranen, K.
- Bönig, S.
- Drummond, M.C.
- Grahn, T.
- Greenlees, P.T.
- Herzan, A.
- Joss, D.T.
- Julin, R.
- Juutinen, S.
- Konki, J.
- Kröll, T.
- Leino, M.
- McPeake, C.
- O'Donnell, D.
- Page, R.D.
- Pakarinen, J.
- Partanen, J.
- Peura, P.
- Rahkila, P.
- Ruotsalainen, P.
- Sandzelius, M.
- Sarén, J.
- Sayğı, B.
- Scholey, C.
- Sorri, J.
- Stolze, S.
- Taylor, M.J.
- Thornthwaite, A.
- Uusitalo, J.
DOIAbstract
International audienceLifetimes of the first excited 2+ states in the extremely neutron-deficient $^{162}$W and $^{164}$W nuclei have been measured using the recoil distance Doppler shift technique. Experimental B(E2) data for the isotopic chains of hafnium, tungsten, and osmium, from the midshell region near the β-stability line towards the N=82 closed shell and the most neutron-deficient nuclides, are compared with predictions of nuclear deformations and 21+→0g.s.+ reduced transition strengths from different classes of state-of-the-art theoretical model calculations. The results reveal striking differences and deficiencies in the predictive power of current nuclear structure models
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