RT Journal Article
T1 Evolution of octupole deformation and collectivity in neutron-rich lanthanides
A1 Nomura, Kosuke
A1 Rodríguez-Guzmán, Rayner
A1 Robledo, Luis Miguel
A1 García Ramos, José Enrique
A1 Hernández, N. C.
AB 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.
PB American Physical Society
SN 2469-9985
SN 2469-9993 (electrónico)
YR 2021
FD 2021
LK http://hdl.handle.net/10272/20613
UL http://hdl.handle.net/10272/20613
LA eng
NO Nomura, K., Rodríguez-Guzmán, R., Robledo, L. M., García-Ramos, J. E., & Hernández, N. C. (2021). Evolution of octupole deformation and collectivity in neutron-rich lanthanides. In Physical Review C (Vol. 104, Issue 4). American Physical Society (APS). https://doi.org/10.1103/physrevc.104.044324
NO This work has been supported by the Tenure Track PilotProgramme of the Croatian Science Foundation and the ÉcolePolytechnique Fédérale de Lausanne, and the Project TTP2018-07-3554 Exotic Nuclear Structure and Dynamics, withfunds of the Croatian-Swiss Research Programme. The workof LMR was supported by Spanish Ministry of Economy andCompetitiveness (MINECO) Grant No. PGC2018-094583-B-I00. The work of JEGR has been partially supportedby the Ministerio de Ciencia e Innovación (Spain) underprojects number PID2019-104002GB-C21, by the Consejería de Economía, Conocimiento, Empresas y Universidadde la Junta de Andalucía (Spain) under Group FQM-370,by the European Regional Development Fund (ERDF), ref.SOMM17/6105/UGR, and by the European Commission,ref. H2020-INFRAIA-2014-2015 (ENSAR2). Resources supporting this work were provided by the CEAFMC andthe Universidad de Huelva High Performance Computer(HPC@UHU) funded by ERDF/MINECO project UNHU15CE-284
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026