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arXiv · 0911.2410

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

V. O. Nesterenko·J. Kvasil·P. Vesely·W. Kleinig·P. -G. Reinhard
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Abstract

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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V. O. Nesterenko, J. Kvasil, P. Vesely, W. Kleinig, P. -G. Reinhard. 2009-11-12. Skyrme-Random-Phase-Approximation description of spin-flip and orbital giant resonances. https://doi.org/10.1142/s0218301310014972

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