Evolution of octupole deformation and collectivity in neutron-rich lanthanides

Znanstveni rad - Izvorni znanstveni rad

• Autor: Kosuke Nomura
• Autor: R. Rodríguez-Guzmán
• Autor: L. M. Robledo
• Autor: J. E. García-Ramos
• Autor: N. C. Hernández
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

The onset of octupole deformation and its impact on related spectroscopic properties is studied in even-even neutron-rich lanthanide isotopes Xe, Ba, Ce, and Nd with neutron number 86 􏰁 N 􏰁 94. Microscopic input comes from the Hartree-Fock-Bogoliubov approximation with constrains on the axially symmetric quadrupole and octupole operators using the Gogny-D1M interaction. At the mean-field level, reflection asymmetric ground states are predicted for isotopes with neutron number around N = 88. Spectroscopic properties are studied by diagonalizing the interacting boson model Hamiltonian, with the parameters obtained via the mapping of the mean-field potential energy surface onto the expectation value of the Hamiltonian in the s, d, and f boson condensate state. The results obtained for low-energy positive- and negative-parity excitation spectra as well as the electric dipole, quadrupole, and octupole transition probabilities indicate the onset of pronounced octupolarity for Z ≈ 56 and N ≈ 88 nuclei.

• Ključne riječi (engleski): Nuclear Structure
• 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. 104, br. 4, 044324
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.104.044324
• URN:NBN: urn:nbn:hr:217:554197
• Datum objave publikacije: 2021-10-21
• 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: Hrvatska zaklada za znanost; Linija financiranja: Tenure Track Pilot Programme
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevC.104.044324
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2021 American Physical Society. Received 7 June 2021; accepted 4 October 2021; published 21 October 2021.
• Datum i vrijeme pohrane: 2024-09-14 17:33:11