Deformation crossing near the first-order shape-phase transition in Gd152-156

V. Werner; E. Williams; R. J. Casperson; R. F. Casten; C. Scholl; P. Von Brentano

doi:10.1103/PhysRevC.78.051303

Deformation crossing near the first-order shape-phase transition in Gd152-156

V. Werner^*, E. Williams, R. J. Casperson, R. F. Casten, C. Scholl, P. Von Brentano

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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.

Original language	English
Article number	051303
Journal	Physical Review C - Nuclear Physics
Volume	78
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.78.051303
Publication status	Published - 24 Nov 2008
Externally published	Yes

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10.1103/PhysRevC.78.051303

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abstract = "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.",

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AU - Williams, E.

AU - Casperson, R. J.

AU - Casten, R. F.

AU - Scholl, C.

AU - Von Brentano, P.

PY - 2008/11/24

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N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevC.78.051303

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Deformation crossing near the first-order shape-phase transition in Gd152-156

Abstract

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