@Article{AGATACollaborationHadynska-Klek+Gadea2018, author="AGATA Collaboration (Hadynska-Klek, K. et al and Gadea, A.", title="Quadrupole collectivity in Ca-42 from low-energy Coulomb excitation with AGATA", journal="Physical Review C", year="2018", publisher="Amer Physical Soc", volume="97", number="2", pages="024326--20pp", abstract="ACoulomb-excitation experiment to study electromagnetic properties of Ca-42 was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. gamma rays from excited states in Ca-42 were measured with the AGATA spectrometer. The magnitudes and relative signs of ten E2 matrix elements coupling six low-lying states in Ca-42, including the diagonal E2 matrix elements of 2(1)(+) and 2(2)(+) states, were determined using the least-squares code GOSIA. The obtained set of reduced E2 matrix elements was analyzed using the quadrupole sum rule method and yielded overall quadrupole deformation for 0(1),(+)(2) and 2(1,2)(+) states, as well as triaxiality for 0(1,2)(+) states, establishing the coexistence of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca-42. The experimental results were compared with the state-of-the-art large-scale shell-model and beyond-mean-field calculations, which reproduce well the general picture of shape coexistence in Ca-42.", optnote="WOS:000425604200003", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3506), last updated on Wed, 14 Mar 2018 16:55:29 +0000", issn="2469-9985", doi="10.1103/PhysRevC.97.024326", opturl="https://doi.org/10.1103/PhysRevC.97.024326", language="English" }