@Article{Krzysiek_etal2014, author="Krzysiek, M. et al and Gadea, A. and Huyuk, T. and Barrientos, D.", title="Study of the soft dipole modes in Ce-140 via inelastic scattering of O-17", journal="Physica Scripta", year="2014", publisher="Iop Publishing Ltd", volume="89", number="5", pages="054016--6pp", optkeywords="pygmy dipole resonances; inelastic scattering; AGATA detector; gamma spectroscopy", abstract="The main aim of this study was a deeper understanding of the nuclear structure properties of the soft dipole modes in Ce-140, excited via inelastic scattering of weakly bound O-17 projectiles. An important aim was to investigate the {\textquoteright}splitting{\textquoteright} of the PDR into two parts: a low-energy isoscalar component dominated by neutron-skin oscillations and a higher-energy component lying on the tail of the giant dipole resonance of a rather isovector character. This was already observed for this nucleus, investigated in (alpha, alpha{\textquoteright}) and (gamma,gamma{\textquoteright}) experiments. The experiment was performed at Laboratori Nazionali di Legnaro, Italy. Inelastic scattering of O-17 ion beam at 20 MeV A(-1) was used to excite the resonance modes in the Ce-140 target. Gamma-rays were registered by five triple clusters of AGATA-Demonstrator and nine large volume scintillators (LaBr3). The scattered O-17 ions were identified by two Delta E -- E Si telescopes of the TRACE array mounted inside the scattering chamber. The telescopes consisted of two segmented Si-pad detectors, each of 60 pixels. Very preliminary data have shown a strong domination of the E1 transitions in the {\textquoteright}pygmy{\textquoteright} region with a character more similar to the one obtained in alpha scattering experiment.", optnote="WOS:000335785300016", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1790), last updated on Thu, 12 Jun 2014 10:15:18 +0000", issn="0031-8949", doi="10.1088/0031-8949/89/5/054016", opturl="https://doi.org/10.1088/0031-8949/89/5/054016", language="English" }