Effect of configuration mixing on quadrupole and octupole collective states of transitional nuclei

Znanstveni rad - Izvorni znanstveni rad

• Autor: Kosuke Nomura
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

A model is presented that simultaneously describes shape coexistence and quadrupole and octupole collective excitations within a theoretical framework based on the nuclear density functional theory and the interacting boson model. An optimal interacting-boson Hamiltonian that incorporates the configuration mixing between normal and intruder states, as well as the octupole degrees of freedom, is identified by means of self- consistent mean-field calculations using a universal energy density functional and a pairing interaction, with constraints on the triaxial quadrupole and the axially symmetric quadrupole and octupole shape degrees of freedom. An illustrative application to the transitional nuclei 72Ge, 74Se, 74Kr, and 76Kr shows that the inclusion of the intruder states and the configuration mixing significantly lower the energy levels of the excited 0+ states, and that the predicted low-lying positive-parity states are characterized by the strong admixture of nearly spherical, weakly deformed oblate, and strongly deformed prolate shapes. The low-lying negative-parity states are shown to be dominated by the deformed intruder configurations.

• Ključne riječi (engleski): quadrupole and octupole collective excitations
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review C
• Brojčani podaci: vol. 106, br. 2, 024330
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.106.024330
• URN:NBN: urn:nbn:hr:217:494623
• Datum objave publikacije: 2022
• Projekt: Šifra: TTP-2018-07-3554; Naziv (hrvatski): Exotic Nuclear Structure and Dynamics; Naziv (engleski): Exotic Nuclear Structure and Dynamics; Kratica: ExoNSD; Voditelj: Kosuke Nomura; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: TTP
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevC.106.024330
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2022 American Physical Society. Received 30 June 2022; Revised 13 August 2022; Accepted 19 August 2022; Published 26 August 2022.
• Datum i vrijeme pohrane: 2023-08-17 10:47:37