Description of superdeformed nuclear states in the interacting boson model

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.1370· OSTI ID:560975

Liu, Y; Zhao, E ^[1]; Liu, Y; Song, J ^[2]; Liu, Y; Sun, H; Zhao, E ^[3]; Liu, Y ^[4]; Sun, H ^[5]

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1. CCAST (World Laboratory), P. O. Box 8730, Beijing 100080 (China)
2. Department of Physics, Peking University, Beijing 100871 (China)
3. Institute of Theoretical Physics, Academia Sinica, P. O. Box 2735, Beijing 100080 (China)
4. Institut fuer Theoretische Physik, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)
5. Department of Physics, Tsinghua University, Beijing 100084 (China)

We show in this paper that the superdeformed nuclear states can be described with a four parameter formula in the spirit of the perturbated SU(3) limit of the sdg IBM. The E2 transition {gamma}-ray energies, the dynamical moments of inertia of the lowest superdeformed (SD) bands in even-even Hg, Pb, Gd, and Dy isotopes, and the energy differences {Delta}E{sub {gamma}}{minus}{Delta}E{sub {gamma}}{sup ref} of the SD band 1 of {sup 194}Hg are calculated. The calculated results agree with experimental data well. This indicates that the SD states are governed by a rotational interaction plus a perturbation with SO{sub sdg}(5) symmetry. The perturbation causing the {Delta}I=4 bifurcation to emerge in the {Delta}I=2 superdeformed rotational band may then possess SO{sub sdg}(5) symmetry. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 560975
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 56; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BIFURCATION
DYSPROSIUM ISOTOPES
E2-TRANSITIONS
EVEN-EVEN NUCLEI
GADOLINIUM ISOTOPES
GAMMA RADIATION
INTERACTING BOSON MODEL
LEAD ISOTOPES
MERCURY 194
MOMENT OF INERTIA
PERTURBATION THEORY
ROTATIONAL STATES
SO GROUPS
SU-3 GROUPS
SUPERDEFORMED NUCLEI