Open AccessDoubly critical character of the N=90 isotones 150Nd, 152Sm, 154Gd, and 156Dy
Author(s) -
Dennis Bonatsos,
D. Lenis,
N. Minkov,
D. Petrellis,
P. Yotov
Publication year - 2019
Publication title -
hnps advances in nuclear physics
Language(s) - English
Resource type - Journals
eISSN - 2654-0088
pISSN - 2654-007X
DOI - 10.12681/hnps.2246
Subject(s) - quadrupole , axial symmetry , physics , vibration , character (mathematics) , deformation (meteorology) , symmetry (geometry) , atomic physics , quantum mechanics , geometry , mathematics , meteorology
The N=90 isotones 150Nd, 152Sm, 154Gd, and 156Dy, which are known to provide the best examples of the X(5) critical point symmetry between quadrupole vibrations [U(5)] and axial quadrupole deformation [SU(3)], are proved to lie on the border between the regions of stable axial octupole deformation and octupole vibrations, described in terms of an Analytic Quadrupole Octupole Axially symmetric (AQOA) model including tunneling effects.