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N=90 QSPT: Cerium, neodymium and samarium isotopic chains in the IBM symmetry triangle

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Published: Apr 1, 2019
DOI: https://doi.org/10.12681/hnps.1793
Keywords:
N=90 quantum shape phase transition critical point IBM-1 calculations IBM symmetry triangle
P. Koseoglou
Institute for Nuclear Physics, TU Darmstadt, GSI Helmoltzzentrum für Schwerionenforschung GmbH
V. Werner
Institute for Nuclear Physics, TU Darmstadt
N. Pietralla
IKP, TU Darmstadt
D. Bonatsos
Institute of Nuclear and Particle Physics, Nuclear Center for Scientific Research “Demokritos”
Abstract
The even-even nuclei, near the the N=90 quantum shape phase transition, of cerium, neodymium and samarium isotopic chains were placed in the interacting boson model symmetry triangle. The different trajectories of the chains revealed the increasing γ-dependence from samarium to cerium by decreasing Z, which can be associated with the decreasing sharpness of the transition from spherical to deformed structures.
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