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Skyrme random-phase-approximation description of spin-flip M1 giant resonance

Vesely P, Kvasil J, Nesterenko VO, Kleinig W, Reinhard PG, Ponomarev VY (2009)

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Publication Type: Journal article

Publication year: 2009

Journal

Book Volume: 80

Article Number: 031302

Journal Issue: 3

DOI: 10.1103/PhysRevC.80.031302

Abstract

The spin-flip M1 giant resonance is explored in the framework of the random-phase-approximation (RPA) on the basis of the Skyrme energy functional. A representative set of eight Skyrme parametrizations (SkT6, SkM*, SLy6, SG2, SkO, SkO', SkI4, and SV-bas) is used. Light and heavy, spherical and deformed nuclei (Ca48, Gd158, Pb208, and U238) are considered. The calculations show that spin densities play a crucial role in forming the collective shift in the spectrum. The interplay of the collective shift and spin-orbit splitting determines the quality of the description. None of the considered Skyrme parametrizations is able to describe simultaneously the M1 strength distribution in closed-shell and open-shell nuclei. It is found that the problem lies in the relative positions of proton and neutron spin-orbit splitting. This calls for a better modeling of the tensor and isovector spin-orbit interaction. © 2009 The American Physical Society.

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APA:

Vesely, P., Kvasil, J., Nesterenko, V.O., Kleinig, W., Reinhard, P.-G., & Ponomarev, V.Y. (2009). Skyrme random-phase-approximation description of spin-flip M1 giant resonance. Physical Review C - Nuclear Physics, 80(3). https://doi.org/10.1103/PhysRevC.80.031302

MLA:

Vesely, P., et al. "Skyrme random-phase-approximation description of spin-flip M1 giant resonance." Physical Review C - Nuclear Physics 80.3 (2009).

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