Quadrupole and octupole collectivity and cluster structures in neon isotopes

Marević, P. and Ebran, J.-P. and Khan, E. and Nikšić, Tamara and Vretenar, Dario (2018) Quadrupole and octupole collectivity and cluster structures in neon isotopes. Physical Review C, 97 (2). pp. 24334-15. ISSN 2469-9985

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Abstract

The lowest positive- and negative-parity bands of 20Ne and neutron-rich even-even Ne isotopes are investigated using a theoretical framework based on energy density functionals. Starting from a self-consistent relativistic Hartree-Bogoliubov calculation of axially symmetric and reflection-asymmetric deformation energy surfaces, the collective symmetry-conserving states are built using projection techniques and the generator coordinate method. Overall a good agreement with the experimental excitation energies and transition rates is obtained. In particular, the model provides an accurate description of the excitation spectra and transition probabilities in 20Ne. The contribution of cluster configurations to the low-energy states is discussed, as well as the transitional character of the ground state. The analysis is extended to 22Ne and the shape-coexisting isotope 24Ne, and to the drip-line nuclei 32Ne and 34Ne. The role of valence neutrons in the formation of molecular-type bonds between clusters is discussed.

Item Type: Article
Date: 2018
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2018 American Physical Society. Received 21 September 2017; revised manuscript received 28 November 2017; published 26 February 2018.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 21 Mar 2018 15:19
Last Modified: 21 Mar 2018 15:19
URI: http://digre.pmf.unizg.hr/id/eprint/5804

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