Systematics of the First 2{sup +} Excitation in Spherical Nuclei with Skyrme-QRPA

Journal Article · Thu May 07 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3146220· OSTI ID:21304915

Terasaki, J ^[1]

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1. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599-3255 (United States)

We use the Quasiparticle Random Phase Approximation (QRPA) and the Skyrme interactions SLy4 and SkM* to systematically calculate energies and transition strengths for the lowest 2{sup +} state in spherical even-even nuclei. The SkM* functional, applied to 178 spherical nuclei between Z = 10 and 90, produces excitation energies that are on average 11% higher than experimental values, with residuals that fluctuate about the average by -35%+55%. The predictions of SkM* and SLy4 have significant differences, in part because of differences in the calculated ground state deformations; SkM* performs better in both the average and dispersion of energies. Comparing the QRPA results with those of generator-coordinate-method (GCM) calculations, we find that the QRPA reproduces trends near closed shells better than the GCM, and overpredicts the energies less severely in general.

• OSTI ID: 21304915
• Journal Information: AIP Conference Proceedings, Vol. 1128, Issue 1; Conference: 5. ANL/MSU/JINA/INT FRIB workshop on bulk nuclear properties, East Lansing, MI (United States), 19-22 Nov 2008; Other Information: DOI: 10.1063/1.3146220; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
DENSITY FUNCTIONAL METHOD
EVEN-EVEN NUCLEI
EXCITATION
GENERATOR-COORDINATE METHOD
GROUND STATES
NUCLEAR DEFORMATION
NUCLEOSYNTHESIS
QUADRUPOLE MOMENTS
QUASIPARTICLE-PHONON MODEL
RANDOM PHASE APPROXIMATION
SHELL MODELS
SKYRME POTENTIAL
SPHERICAL CONFIGURATION
STRENGTH FUNCTIONS