RT Journal Article
T1 Nuclear shape coexistence in Po isotopes : an interacting boson model study
A1 García Ramos, José Enrique
A1 Heyde, K.
AB Background: The lead region, Po, Pb, Hg, and Pt, shows up the presence ofcoexisting structures having different deformation and corresponding todifferent particle-hole configurations in the Shell Model language.  Purpose: We intend to study the importance of configuration mixing in theunderstanding of the nuclear structure of even-even Po isotopes, where theshape coexistence phenomena are not clear enough.  Method: We study in detail a long chain of polonium isotopes, 190-208Po,using the interacting boson model with configuration mixing (IBM-CM). We fixthe parameters of the Hamiltonians through a least-squares fit to the knownenergies and absolute B(E2) transition rates of states up to 3 MeV.  Results: We obtained the IBM-CM Hamiltonians and we calculate excitationenergies, B(E2)'s, electric quadrupole moments, nuclear radii and isotopicshifts, quadrupole shape invariants, wave functions, and deformations.  Conclusions: We obtain a good agreement with the experimental data for allthe studied observables and we conclude that shape coexistence phenomenon ishidden in Po isotopes, very much as in the case of the Pt isotopes.
SN 0556-2813
YR 2015
FD 2015
LK http://hdl.handle.net/10272/11722
UL http://hdl.handle.net/10272/11722
LA eng
NO García Ramos, J.E., Heyde, K.: "Nuclear shape coexistence in Po isotopes : an interacting boson model study".  Physical Review C. Vol. 92, 034309. DOI: 10.1103/PhysRevC.92.034309
DS Repositorio Institucional de la Universidad de Huelva
RD 13 jun 2026