Phys. Rev. C 78, 051303(R) (2008) [5 pages]Deformation crossing near the first-order shape-phase transition in 152–156Gd
Quantitative evidence of the spherical-to-deformed shape phase transition near N=90 is given using the model-independent quadrupole shape invariant q2, which provides a measure of the β deformation of a given nucleus. This shape invariant is obtained using experimental B(E2) values for the ground state band and first excited 0+ band of Gd isotopes around N=90, and is compared to calculations within the interacting boson model. Near the shape phase transition, the ground and excited 0+ band deformations are observed to cross. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.78.051303
DOI:
10.1103/PhysRevC.78.051303
PACS:
21.10.Ky, 21.60.Ev, 21.60.Fw, 27.60.+j
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