Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-01-15
AIP Conf.Proc.1128:48-58,2009
Physics
Nuclear Physics
Nuclear Theory
16 pages, 10 figures. v2: Rewritten with somewhat different emphasis and conclusions, and additional analysis. Complete set of
Scientific paper
10.1063/1.3146220
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+ 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. We attribute part of the difference to a deficiency in the way the GCM is implemented.
Bertsch George F.
Engel Johannes
Terasaki J.
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