Naslov
Shape phase transitions in odd−A Zr isotopes

Autori
Nomura, K. ; Nikšić, T. ; Vretenar, D.

Izvornik
Physical review. C (2469-9985) 102 (2020), 3; 034315, 13

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

Ključne riječi
Nuclear Structure

Sažetak
Spectroscopic properties that characterize shape- phase transitions in neutron-rich odd-A Zr isotopes are investigated using the framework of nuclear density-functional theory and particle-core coupling. The interacting-boson Hamiltonian of the even-even core nuclei, and the single-particle energies and occupation probabilities of the unpaired neutron, are completely determined by deformation constrained self-consistent mean-field calculations based on the relativistic Hartree- Bogoliubov model with a choice of a universal energy density functional and pairing interaction. The triaxial (β , γ ) deformation energy surfaces for even-even 94−102 Zr indicate the occurrence of a transition from triaxial or γ soft (94, 96Zr) to prolate (98Zr) and triaxial (100, 102Zr) shapes. The corresponding low-energy excitation spectra of the odd-A Zr isotopes are in very good agreement with recent experimental results. Consistent with the structural evolution of the neighboring even-even Zr nuclei, the state-dependent effective deformations and their fluctuations in the odd-A isotopes indicate a pronounced discontinuity around the transitional nucleus 99Zr.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA