Shape phase transitions in odd − A Zr isotopes

Scientific paper - Original scientific paper

• Author: K. Nomura
• Author: T. Nikšić
• Author: D. Vretenar
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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 94−102Zr 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.

• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C
• Numbering: vol. 102, no. 3, 034315
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.102.034315
• URN:NBN: urn:nbn:hr:217:580691
• Publication: 2020
• Project: Number: KK.01.1.1.01.0004; Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri; Acronym: ZCI QuantiXLie; Leader: Hrvoje Buljan; Jurisdiction: Croatia; Funding stream: ZC
• Document URL: https://link.aps.org/doi/10.1103/PhysRevC.102.034315
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2020 American Physical Society. Received 30 June 2020; accepted 27 August 2020; published 10 September 2020.
• Created on: 2020-11-22 14:40:44