Shape Coexistence in the Neutron-Deficient Even-Even Hg182−188 Isotopes Studied via Coulomb Excitation
- Bree, N.
- Wrzosek-Lipska, K.
- Petts, A.
- Andreyev, A.
- Bastin, B.
- Bender, M.
- Blazhev, A.
- Bruyneel, B.
- Butler, P. A.
- Butterworth, J.
- Carpenter, M. P.
- Cederkäll, J.
- Clément, E.
- Cocolios, T. E.
- Deacon, A.
- Diriken, J.
- Ekström, A.
- Fitzpatrick, C.
- Fraile, L. M.
- Fransen, Ch.
- Freeman, S. J.
- Gaffney, L. P.
- García-Ramos, J. E.
- Geibel, K.
- Gernhäuser, R.
- Grahn, Tuomas
- Guttormsen, M.
- Hadinia, B.
- Hadyńska-Kle¸k, K.
- Hass, M.
- Heenen, P.-H.
- Herzberg, R.-D.
- Hess, H.
- Heyde, K.
- Huyse, M.
- Ivanov, O.
- Jenkins, D. G.
- Julin, Rauno
- Kesteloot, N.
- Kröll, Th.
- Krücken, R.
- Larsen, A. C.
- Lutter, R.
- Marley, P.
- Napiorkowski, P. J.
- Orlandi, R.
- Page, R. D.
- Pakarinen, Janne
- Patronis, N.
- Peura, Pauli
- Piselli, E.
- Rahkila, Panu
- Rapisarda, E.
- Reiter, P.
- Robinson, A. P.
- Scheck, M.
- Siem, S.
- Chakkal, K. Singh
- Smith, J. F.
- Srebrny, J.
- Stefanescu, I.
- Tveten, G. M.
- Van Duppen, P.
- Walle, J. Van de
- Voulot, D.
- Warr, N.
- Wenander, F.
- Wiens, A.
- Wood, J. L.
- Zielińska, and M.
Publication date
February 2016
DOI Publisher
American Physical Society (APS)Abstract
Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV=nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that couple the ground state and low-lying excited states in 182−188Hg were extracted. Information on the deformation of the ground and the first excited 0þ states was deduced using the quadrupole sum rules approach. Results show that the ground state is slightly deformed and of oblate nature, while a larger deformation for the excited 0þ state was noted in 182;184Hg. The results are compared to beyond mean field and interacting-boson based models and interpreted within a two-state mixing model. Partia...
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