Spectroscopic calculations of the low-lying structure in exotic Os and W isotopes

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.054303· OSTI ID:21502450

Nomura, K ^[1]; Otsuka, T ^[1]; Rodriguez-Guzman, R; Sarriguren, P ^[2]; Robledo, L M ^[3]; Regan, P H; Stevenson, P D; Podolyak, Zs ^[4]

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1. Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
2. Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid (Spain)
3. Departamento de Fisica Teorica, Universidad Autonoma de Madrid, E-28049 Madrid (Spain)
4. Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)

Structural evolution in neutron-rich Os and W isotopes is investigated in terms of the interacting boson model (IBM) Hamiltonian determined by (constrained) Hartree-Fock-Bogoliubov calculations with the Gogny-D1S energy density functional (EDF). The interaction strengths of the IBM Hamiltonian are produced by mapping the potential energy surface (PES) of the Gogny-EDF with quadrupole degrees of freedom onto the corresponding PES of the IBM system. We examine the prolate-to-oblate shape/phase transition which is predicted to take place in this region as a function of neutron number N within the considered Os and W isotopic chains. The onset of this transition is found to be more rapid compared to the neighboring Pt isotopes. The calculations also allow the prediction of spectroscopic variables (excited state energies and reduced transition probabilities) which are presented for the neutron-rich {sup 192,194,196}W nuclei, for which there is only very limited experimental data available to date.

• OSTI ID: 21502450
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevC.83.054303; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHAINS
DEGREES OF FREEDOM
ENERGY DENSITY
EXCITED STATES
FORECASTING
HAMILTONIANS
HARTREE-FOCK-BOGOLYUBOV THEORY
INTERACTING BOSON MODEL
INTERACTIONS
NEUTRON-RICH ISOTOPES
NEUTRONS
NUCLEI
OSMIUM ISOTOPES
PHASE TRANSFORMATIONS
PLATINUM ISOTOPES
POTENTIAL ENERGY
PROBABILITY
TUNGSTEN 192
TUNGSTEN ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY
ENERGY LEVELS
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
NUCLEAR MODELS
NUCLEONS
QUANTUM OPERATORS
RADIOISOTOPES
SHELL MODELS