Quadrupole and octupole collectivity and cluster structures in neon isotopes - Institut de Physique Nucléaire d'Orsay
Article Dans Une Revue Phys.Rev.C Année : 2018

Quadrupole and octupole collectivity and cluster structures in neon isotopes

Résumé

The lowest positive- and negative-parity bands of Ne20 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 Ne20. 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 Ne22 and the shape-coexisting isotope Ne24, and to the drip-line nuclei Ne32 and Ne34. The role of valence neutrons in the formation of molecular-type bonds between clusters is discussed.

Dates et versions

hal-01719599 , version 1 (28-02-2018)

Identifiants

Citer

P. Marević, J.P. Ebran, E. Khan, T. Nikšić, D. Vretenar. Quadrupole and octupole collectivity and cluster structures in neon isotopes. Phys.Rev.C, 2018, 97 (2), pp.024334. ⟨10.1103/PhysRevC.97.024334⟩. ⟨hal-01719599⟩
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