Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes : Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg
- Wrzosek-Lipska, K.
- Rezynkina, K.
- Bree, N.
- Zielińska, M.
- Gaffney, L. P.
- Petts, A.
- Andreyev, A.
- Bastin, B.
- Bender, M.
- Blazhev, A.
- Bruyneel, B.
- Butler, P. A.
- Carpenter, M. P.
- Cederkäll, J.
- Clément, E.
- Cocolios, T. E.
- Deacon, A. N.
- Diriken, J.
- Ekström, A.
- Fitzpatrick, C.
- Fraile, L. M.
- Fransen, Ch.
- Freeman, S. J.
- García-Ramos, J. E.
- Geibel, K.
- Gernhäuser, R.
- Grahn, T.
- Guttormsen, M.
- Hadinia, B.
- Hadyńska-Klȩk, K.
- Hass, M.
- Heenen, P. -H.
- Herzberg, R. -D.
- Hess, H.
- Heyde, K.
- Huyse, M.
- Ivanov, O.
- Jenkins, D. G.
- Julin, R.
- Kesteloot, N.
- Kröll, Th.
- Krücken, R.
- Larsen, A. C.
- Lutter, R.
- Marley, P.
- Napiorkowski, P. J.
- Orlandi, R.
- Page, R. D.
- Pakarinen, J.
- Patronis, N.
- Peura, P.
- Piselli, E.
- Próchniak, L.
- Rahkila, P.
- Rapisarda, E.
- Reiter, P.
- Robinson, A. P.
- Scheck, M.
- Siem, S.
- Singh Chakkal, K.
- Smith, J. F.
- Srebrny, J.
- Stefanescu, I.
- Tveten, G. M.
- Van Duppen, P.
- Van de Walle, J.
- Voulot, D.
- Warr, N.
- Wiens, A.
- Wood, J. L.
DOIAbstract
The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass 182-188 Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. The population of 0+1,2 , 2+1,2 and 4+1 states was observed in all nuclei under study. Reduced E2 matrix elements coupling populated yrast and non-yrast states were extracted, including their relative signs. These are a sensitive probe of shape coexistence and may be used to validate nuclear models. The experimental results are discussed in terms of mixing of tw...
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