Shape Transition and Triaxial Interaction Effect in the Structure of 152-166Dy Isotopes

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Communications in Theoretical Physics ›› 2014, Vol. 62 ›› Issue (06): 847-858.

• Nuclear Physics • Previous Articles Next Articles

Shape Transition and Triaxial Interaction Effect in the Structure of ^152-166Dy Isotopes

Falih H. Al-Khudair, Abdul R. Subber, Ashwaq F. Jaafer

Physics Department, Education College for Pure Sciences, Basrah University, Basrah, Iraq

Received: 2014-05-04 Revised: 2014-07-21 Published: 2014-12-01
Contact: Falih H. Al-Khudair E-mail:falih9@gmail.com

Abstract

Abstract: The positive parity states in even-even ^152-166Dy are studied systematically in the framework of the interacting boson model (IBM). A cubic term, L=3, has been added to the Hamiltonian in order to produce the effect of triaxiality on the energy spectrum. The potential energy surfaces as a function of β and γ deformation parameters, for all isotopes have been produced. Energy levels and reduced electric quadrupole transition probabilities are calculated in framework of IBM with Cubic term (IBMC). All results are compared with available experimental data. It is found that these isotopes can be described by a schematic Hamiltonian in transition from U(5) (vibration) to SU(3) (rotation) dynamic symmetry.

Key words: nuclear structure, nuclear models, Dy isotopes

PACS numbers:

21.60.Fw

Falih H. Al-Khudair, Abdul R. Subber, Ashwaq F. Jaafer, Commun. Theor. Phys. 62 (2014) 847.

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Shape Transition and Triaxial Interaction Effect in the Structure of ^152-166Dy Isotopes

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