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

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.

11 pages, 4 figures

References in corpus (4)

• The Skyrme Interaction in finite nuclei and nuclear matter
• Skyrme-Rpa Description of Dipole Giant Resonance in Heavy and Superheavy Nuclei
• Skyrme-Rpa Description of Spin-Flip M1 Giant Resonance
• Self-Consistent Separable Rpa for Skyrme Forces: Giant Resonances in Axial Nuclei

Cited by in corpus (8)

• General Treatment of Vortical, Toroidal, and Compression Modes
• Magnetic dipole excitations of ${}^{50}$Cr
• Deformation effects in toroidal and compression dipole excitations of ${}^{170}$Yb: Skyrme-RPA analysis
• Role of residual interaction in the relativistic description of M1 excitation
• Toroidal, compression, and vortical dipole strengths in ${}^{144-154}$Sm: Skyrme-RPA exploration of deformation effect
• Toroidal, compression, and vortical dipole strengths in 124Sn
• Magnetic dipole excitation and its sum rule in nuclei with two valence nucleons
• Symmetry breaking of Gamow-Teller and magnetic-dipole transitions and its restoration in calcium isotopes