Skyrme-Random-Phase-Approximation description of spin-flip and orbital giant resonances

Details Skyrme-Random-Phase-Approximation description of spin-flip and orbital giant resonances Skyrme-Random-Phase-Approximation description of spin-flip and orbital giant resonances

2009-11-12

arxiv.org/abs/0911.2410v1

Int.J.Mod.Phys.E19:558-567,2010

Physics

Nuclear Physics

Nuclear Theory

11 pages, 4 figures

Scientific paper

10.1142/S0218301310014972

The self-consistent separable random-phase approximation (SRPA) model with Skyrme forces is extended to the case of magnetic excitations and applied to the description of spin-flip and orbital M1 giant resonances in the isotopic chain $^{142-152}$Nd. The Skyrme forces SkT6, SkM*, SLy6 and SkI3 are used. The calculations show the onset of the scissors mode with increasing deformation. A specific three-peak structure of the spin-flip response is found and explained by particular neutron and proton spin-flip transitions. Although the employed forces provide an acceptable qualitative description, the Skyrme functional still needs further improvement to reproduce quantitatively the experimental data.

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