Signatures of shape phase transitions in krypton isotopes based on relativistic energy density functionals

Scientific paper - Original scientific paper

• Author: K. E. Karakatsanis
• Author: Kosuke Nomura
• 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 the shape phase transitions in krypton isotopes with the mass A≈80 region are investigated within the framework of the nuclear density functional theory. Triaxial quadrupole constrained self-consistent mean-field calculations that employ relativistic energy density functionals and a pairing interaction are carried out for the even-even nuclei 76−86Kr. The spectroscopic properties are computed by solving the triaxial quadrupole collective Hamiltonian, with the ingredients, i.e., the deformation-dependent moments of inertia and mass parameters, and the collective potential, determined by using the SCMF solutions as microscopic inputs. Systematic behaviors of the SCMF potential energy surfaces, the corresponding low-energy spectra, electric quadrupole and monopole transition probabilities, and the fluctuations in the triaxial quadrupole deformations indicate evolution of the underlying nuclear structure as functions of the neutron number, that is characterized by a considerable degree of shape mixing. A special attention is paid to the transitional nucleus 82Kr, which has been recently identified experimentally as an empirical realization of the E(5) critical-point symmetry.

• Keywords (english): shape phase transitions; krypton isotopes
• 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. 105, no. 6, 064310
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.105.064310
• URN:NBN: urn:nbn:hr:217:585432
• Publication: 2022
• Project: Number: TTP-2018-07-3554; Title (croatian): Exotic Nuclear Structure and Dynamics; Title (english): Exotic Nuclear Structure and Dynamics; Acronym: ExoNSD; Leader: Kosuke Nomura; Jurisdiction: Croatia; Funding stream: TTP
• Document URL: https://link.aps.org/doi/10.1103/PhysRevC.105.064310
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2022 American Physical Society. Received 9 March 2022; Accepted 7 June 2022; Published 23 June 2022.
• Created on: 2023-08-18 17:18:58