RT Journal Article
T1 Octupole correlations in light actinides from the interacting boson model based on the Gogny energy density functional
A1 Nomura, Kosuke
A1 Rodríguez-Guzmán, Rayner
A1 Robledo, Luis Miguel
A1 Humadi, Y.M.
A1 García Ramos, José Enrique
AB The quadrupole-octupole coupling and the related spectroscopic properties have been studied for the even-even light actinides 218–238 Ra and 220–240 Th. The Hartree-Fock-Bogoliubov approximation, based on the Gogny-D1M energy density functional, has been employed as a microscopic input, i.e., to obtain (axially symmetric) mean-field potential energy surfaces as functions of the quadrupole and octupole deformation parameters. The mean-field potential energy surfaces have been mapped onto the corresponding bosonic potential energy surfaces using the expectation value of the sdf interacting boson model (IBM) Hamiltonian in the boson condensate state. The strength parameters of the sdf IBM Hamiltonian have been determined via this mapping procedure. The diagonalization of the mapped IBM Hamiltonian provides energies for positive- and negative-parity states as well as wave functions which are employed to obtain transitional strengths. The results of the calculations compare well with available data from Coulomb excitation experiments and point towards a pronounced octupole collectivity around 224 Ra and 226 Th.
PB American Physical Society
SN 2469-9985
SN 2469-9993 (electrónico)
YR 2020
FD 2020-12
LK http://hdl.handle.net/10272/19281
UL http://hdl.handle.net/10272/19281
LA en
NO Nomura, K., Rodríguez-Guzmán, R., Humadi, Y.M., Robledo, L., García-Ramos, J.E.: "Octupole correlations in light actinides from the interacting boson model based on the Gogny energy density functional". Physical Review C. 102, 064326 (2020). https://doi.org/10.1103/PhysRevC.102.064326
NO This work has been supported by the Tenure Track Pi-lot Programme of the Croatian Science Foundation andthe École Polytechnique Fédérale de Lausanne, and theProject TTP-2018-07-3554 Exotic Nuclear Structure andDynamics, with funds of the Croatian-Swiss Research Programme. The work of L.M.R. was supported by Spanish Ministry of Economy and Competitiveness (MINECO) Grant No. PGC2018-094583-B-I00. This work has been partially supported by the Ministerio de Ciencia e Innovación (Spain) under Project No. PID2019-104002GB-C21, by the Consejería de Economía, Conocimiento, Empresas y Universidad de la Junta de Andalucía (Spain) under Group FQM-370, by the European Regional Development Fund (ERDF), No. SOMM17/6105/UGR, and by the European Commission, No. H2020-INFRAIA-2014-2015 (ENSAR2). Resources supporting this work were provided by the CEAFMC and the Universidad de Huelva High Performance Computer (HPC@UHU) funded by ERDF/MINECO Project No. UNHU-15CE-2848.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026