Details

Autor(en) / Beteiligte

• 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, Joakim
• Clément, E
• Cocolios, T E
• Deacon, A
• Diriken, J
• Ekström, Andreas
• Fitzpatrick, C
• Fraile, L M
• Fransen, Ch
• Freeman, S J
• Gaffney, L P
• García-Ramos, J E
• Geibel, K
• Gernhäuser, R
• Grahn, T
• 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, 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 J
• Piselli, E
• 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
• Wenander, F
• Wiens, A
• Wood, J L
• Zielińska, M

Titel

Shape Coexistence in the Neutron-Deficient Even-Even Hg182-188 Isotopes Studied via Coulomb Excitation

Ist Teil von

• Physical review letters, 2014-04, Vol.112 (16)

Erscheinungsjahr

2014

Quelle

American Physical Society

Beschreibungen/Notizen

• 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 Hg182-188 were extracted. Information on the deformation of the ground and the first excited 0+ 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 0+ state was noted in Hg182,184. The results are compared to beyond mean field and interacting-boson based models and interpreted within a two-state mixing model. Partial agreement with the model calculations was obtained. The presence of two different structures in the light even-mass mercury isotopes that coexist at low excitation energy is firmly established.