Naslov
Quadrupole and octupole collectivity and cluster structures in neon isotopes

Autori
Marević, Petar ; Ebran, Jean-Paul, Khan, Elias ; Nikšić, Tamara ; Vretenar, Dario

Izvornik
Physical review. C (2469-9985) 97 (2018), 2; 024334-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
nuclear energy density functional, cluster models

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA