Coherent state model extension for the description of positive and negative parity bands in even-odd nuclei

Journal Article · Thu Oct 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.044327· OSTI ID:21293940

Raduta, A A ^[1]; Raduta, C M ^[2]; Faessler, Amand ^[3]

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1. Department of Theoretical Physics and Mathematics, Bucharest University, Post Office Box MG11, Bucharest RO-077125 (Romania)
2. Department of Theoretical Physics, Institute of Physics and Nuclear Engineering, Post Office Box MG6, Bucharest RO-077125 (Romania)
3. Institut fuer Theoretische Physik der Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)

A particle-core Hamiltonian is used to describe the lowest parity partner bands, K{sup {pi}}=1/2{sup {+-}}, in {sup 219}Ra, {sup 237}U, and {sup 239}Pu and three pairs of parity partner bands, K{sup {pi}}=1/2{sup {+-}},3/2{sup {+-}}, and 5/2{sup {+-}}, in {sup 227}Ra. The core is described by a quadrupole and octupole boson Hamiltonian. The particle-core Hamiltonian consists of four terms: a quadrupole-quadrupole, an octupole-octupole, a spin-spin, and a rotational I{sup 2} interaction, with I denoting the total angular momentum. The model Hamiltonian is treated within a projected spherical particle-core basis. The calculated excitation energies are compared with the corresponding experimental data as well as with those obtained using other approaches. For {sup 219}Ra, we also calculated the E1 and E2 branching ratios. Also, we searched for some signatures for static octupole deformation in the considered odd isotopes.

• OSTI ID: 21293940
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANNIHILATION OPERATORS
BOSONS
BRANCHING RATIO
EIGENSTATES
EXCITATION
HAMILTONIANS
INTERACTIONS
OCTUPOLES
PARITY
PLUTONIUM 239
RADIUM 219
RADIUM 227
SIMULATION
SPHERICAL CONFIGURATION
SPIN
URANIUM 237