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Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes

dc.contributor.authorKESTELOOT, N.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorBASTIN, B.
dc.contributor.authorGAFFNEY, L. P.
dc.contributor.authorWRZOSEK-LIPSKA, K.
dc.contributor.authorAURANEN, K.
dc.contributor.authorBAUER, C.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorBENDER, M.
dc.contributor.authorBILDSTEIN, V.
dc.contributor.authorBLAZHEV, A.
dc.contributor.authorBÖNIG, S.
dc.contributor.authorBREE, N.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorCLÉMENT, E.
dc.contributor.authorCOCOLIOS, T. E.
dc.contributor.authorDAMYANOVA, A.
dc.contributor.authorDARBY, I.
dc.contributor.authorDE WITTE, H.
dc.contributor.authorDI JULIO, D.
dc.contributor.authorDIRIKEN, J.
dc.contributor.authorFRANSEN, C.
dc.contributor.authorGARCÍA-RAMOS, J. E.
dc.contributor.authorGERNHÄUSER, R.
dc.contributor.authorGRAHN, T.
dc.contributor.authorHEENEN, P.-H.
dc.contributor.authorHESS, H.
dc.contributor.authorHEYDE, K.
dc.contributor.authorHUYSE, M.
dc.contributor.authorIWANICKI, J.
dc.contributor.authorJAKOBSSON, U.
dc.contributor.authorKONKI, J.
dc.contributor.authorKRÖLL, T.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorLAURENT, B.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorLECESNE, N.
dc.contributor.authorLUTTER, R.
dc.contributor.authorPAKARINEN, J.
dc.contributor.authorPEURA, P.
dc.contributor.authorPISELLI, E.
dc.contributor.authorPRÓCHNIAK, L.
dc.contributor.authorRAHKILA, P.
dc.contributor.authorRAPISARDA, E.
dc.contributor.authorREITER, P.
dc.contributor.authorSCHECK, M.
dc.contributor.authorSEIDLITZ, M.
dc.contributor.authorSFERRAZZA, M.
dc.contributor.authorSIEBECK, B.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorSJODIN, M.
dc.contributor.authorTORNQVIST, H.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorTRAYKOV, E.
dc.contributor.authorVAN DE WALLE, J.
dc.contributor.authorVAN DUPPEN, P.
dc.contributor.authorVERMEULEN, M.
dc.contributor.authorVOULOT, D.
dc.contributor.authorWARR, N.
dc.contributor.authorWENANDER, F.
dc.contributor.authorWIMMER, K.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorZIELIŃSKA, M.
dc.date.issued2015-11
dc.identifier.issn2469-9985
dc.description.abstractEnCoulomb-excitation experiments are performed with postaccelerated beams of neutron-deficient $^{196,198,200,202}$Poisotopes at the REX-ISOLDE facility. A set of matrix elements, coupling the low-lying states in these isotopes,is extracted. In the two heaviest isotopes, $^{200,202}$Po, the transitional and diagonal matrix elements of the $2^+_1$ state are determined. In $^{196,198}$Po multistep Coulomb excitation is observed, populating the $4^+_1$ , $0^+_2$ , and $2^+_2$ states.The experimental results are compared to the results from the measurement of mean-square charge radii inpolonium isotopes, confirming the onset of deformation from $^{196}$Po onwards. Three model descriptions are usedto compare to the data. Calculations with the beyond-mean-field model, the interacting boson model, and thegeneral Bohr Hamiltonian model show partial agreement with the experimental data. Finally, calculations witha phenomenological two-level mixing model hint at the mixing of a spherical structure with a weakly deformedrotational structure.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enDeformation and mixing of coexisting shapes in neutron-deficient polonium isotopes
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.92.054301
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
bordeaux.journalPhysical Review C
bordeaux.page054301
bordeaux.volume92
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierin2p3-01225279
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-01225279v1
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