Skyrme RPA description of γ-vibrational states in rare-earth nuclei

V.O. Nesterenko; V.G. Kartavenko; W. Kleinig; J. Kvasil; A. Repko; R.V. Jolos; P.-G. Reinhard

doi:10.1051/epjconf/201610703003

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EPJ Web of Conferences 107, 03003 (2016)
https://doi.org/10.1051/epjconf/201610703003

Skyrme RPA description of γ-vibrational states in rare-earth nuclei

V.O. Nesterenko¹^a, V.G. Kartavenko¹, W. Kleinig¹^,2, J. Kvasil³, A. Repko³, R.V. Jolos¹ and P.-G. Reinhard⁴

¹ Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, 141980, Russia
² Technische Universität Dresden, Institut für Analysis, D-01062, Dresden, Germany
³ Institute of Particle and Nuclear Physics, Charles University, CZ-18000, Praha 8, Czech Republic
⁴ Institut für Theoretische Physik II, Universität Erlangen, D-91058, Erlangen, Germany

^a e-mail: nester@theor.jinr.ru

Published online: 19 January 2016

Abstract

The lowest γ-vibrational states with K^π = 2⁺_γ in well-deformed Dy, Er and Yb isotopes are investigated within the self-consistent separable quasiparticle random-phase-approximation (QRPA) approach based on the Skyrme functional. The energies E_γ and reduced transition probabilities B(E2)_γ of the states are calculated with the Skyrme force SV-mas10. We demonstrate the strong effect of the pairing blocking on the energies of γ-vibrational states. It is also shown that collectivity of γ-vibrational states is strictly determined by keeping the Nilsson selection rules in the corresponding lowest 2qp configurations.

© Owned by the authors, published by EDP Sciences, 2016

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.