RT Journal Article
T1 Quadrupole-octupole coupling and the onset of octupole deformation in actinides
A1 Nomura, Kosuke
A1 Rodríguez-Guzmán, Rayner
A1 Robledo, L. M.
A1 García Ramos, José Enrique
AB The evolution of quadrupole and octupole collectivity and their coupling is investigated in a series of even-even isotopes of the actinides Ra, Th, U, Pu, Cm, and Cf with neutron number in the interval 130 < N < 150. The Hartree-Fock-Bogoliubov approximation, based on the parametrization D1M of the Gogny energy density functional, is employed to generate potential energy surfaces depending upon the axially symmetric quadrupole and octupole shape degrees of freedom. The mean-field energy surface is then mapped onto the expectation value of the sdf interacting-boson-model Hamiltonian in the boson condensate state as to determine the strength parameters of the boson Hamiltonian. Spectroscopic properties related to the octupole degree of freedom are produced by diagonalizing the mapped Hamiltonian. Calculated low-energy negative-parity spectra, B(E 3; 3 _1- → 0_1 + ) reduced transition rates, and effective octupole deformation suggest that the transition from nearly spherical to stable octupole-deformed, and to octupole vibrational states occurs systematically in the actinide region.
PB American Physical Society
SN 2469-9985
SN 2469-9993 (electrónico)
YR 2021
FD 2021-04
LK http://hdl.handle.net/10272/19771
UL http://hdl.handle.net/10272/19771
LA eng
NO Nomura, K., Rodríguez-Guzmán, R., Robledo, L. M., & García-Ramos, J. E. (2021). Quadrupole-octupole coupling and the onset of octupole deformation in actinides. Physical Review C, 103(4). https://doi.org/10.1103/physrevc.103.044311
DS Repositorio Institucional de la Universidad de Huelva
RD 2 jun 2026