RT Journal Article
T1 Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg
A1 Wrzosek-Lipska, K.
A1 García Ramos, José Enrique
A1 Wood, J. L.
AB 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 two different configurations and are compared with three different model calculations: the Beyond Mean Field model, the Interacting Boson Model with configuration mixing and the General Bohr Hamiltonian. Partial agreement with experiment was observed, hinting to missing ingredients in the theoretical descriptions.
PB Springer Verlag
SN 1434-6001
SN 1434-601X (electrónico)
YR 2019
FD 2019
LK http://hdl.handle.net/10272/19010
UL http://hdl.handle.net/10272/19010
LA eng
NO Wrzosek-Lipska, K., García Ramos, J.E., Wood, J. L. y otros... (2019) Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of Hg-182, Hg-184, Hg-186 and Hg-188. European physical journal A, 55 (8). http://dx.doi.org/10.1140/epja/i2019-12815-2
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026