Structural evolution of the Z=52-62 neutron-deficient nuclei in the interacting boson approximation framework

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.054321· OSTI ID:21389029

Pascu, S; Cata-Danil, Gh ^[1]; Zamfir, N V; Marginean, N ^[1]

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1. National Institute for Physics and Nuclear Engineering, R-77125, Bucharest-Magurele (Romania)

The interacting boson approximation (IBA) is employed in the present article to follow the structural evolution of the neutron-deficient nuclei from the Z=52-62 region. The IBA model parameters are determined to reproduce the properties of the low-lying positive parity excitations for a wide range of even-even collective nuclei. The parameters aim to describe simultaneously the existing electromagnetic data (energy levels, transition matrix elements, etc.) and hadronic ones (two-nucleon transfer intensities). It is shown that a simple Hamiltonian with only two terms is not adequate to describe the properties across this region. It is found that the octupole term plays an important role in reproducing the properties of the 2{sub g}amma{sup +} and 0{sub 2}{sup +} states, as well as in the description of the two-neutron transfer intensities patterns. A mapping of these parameters in the IBA symmetry triangle allows the comparison of representative trajectories for different isotopic chains.

• OSTI ID: 21389029
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevC.81.054321; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
CHAINS
COMPARATIVE EVALUATIONS
EXCITATION
HAMILTONIANS
INTERACTING BOSON MODEL
MATRIX ELEMENTS
NEUTRON TRANSFER
NEUTRON-DEFICIENT ISOTOPES
NUCLEI
NUCLEONS
OCTUPOLES
PARITY
SYMMETRY
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EVALUATION
FERMIONS
HADRONS
ISOTOPES
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MULTIPOLES
NUCLEAR MODELS
PARTICLE PROPERTIES
QUANTUM OPERATORS
RADIOISOTOPES
SHELL MODELS