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Evolution of deformation in neutron-rich Ba isotopes up to $A=150$

dc.contributor.authorLICĂ, R.
dc.contributor.authorBENZONI, G.
dc.contributor.authorRODRÍGUEZ, T.R.
dc.contributor.authorBORGE, M.J.G.
dc.contributor.authorFRAILE, L.M.
dc.contributor.authorMACH, H.
dc.contributor.authorMORALES, A.I.
dc.contributor.authorMADURGA, M.
dc.contributor.authorSOTTY, C.O.
dc.contributor.authorVEDIA, V.
dc.contributor.authorDE WITTE, H.
dc.contributor.authorBENITO, J.
hal.structure.identifierDirection des Applications Militaires [DAM]
dc.contributor.authorBERNARD, R.N.
dc.contributor.authorBERRY, T.
dc.contributor.authorBRACCO, A.
dc.contributor.authorCAMERA, F.
dc.contributor.authorCERUTI, S.
dc.contributor.authorCHARVIAKOVA, V.
dc.contributor.authorCIEPLICKA-ORYŃCZAK, N.
dc.contributor.authorCOSTACHE, C.
dc.contributor.authorCRESPI, F.C.L.
dc.contributor.authorCRESWELL, J.
dc.contributor.authorFERNANDEZ-MARTÍNEZ, G.
dc.contributor.authorFYNBO, H.
dc.contributor.authorGREENLEES, P.T.
dc.contributor.authorHOMM, I.
dc.contributor.authorHUYSE, M.
dc.contributor.authorJOLIE, J.
dc.contributor.authorKARAYONCHEV, V.
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorKÖSTER, U.
dc.contributor.authorKONKI, J.
dc.contributor.authorKRÖLL, T.
dc.contributor.authorKURCEWICZ, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorKURTUKIAN-NIETO, T.
dc.contributor.authorLAZARUS, I.
dc.contributor.authorLUND, M.V.
dc.contributor.authorMĂRGINEAN, N.
dc.contributor.authorMĂRGINEAN, R.
dc.contributor.authorMIHAI, C.
dc.contributor.authorMIHAI, R.E.
dc.contributor.authorNEGRET, A.
dc.contributor.authorORDUZ, A.
dc.contributor.authorPATYK, Z.
dc.contributor.authorPASCU, S.
dc.contributor.authorPUCKNELL, V.
dc.contributor.authorRAHKILA, P.
dc.contributor.authorRAPISARDA, E.
dc.contributor.authorREGIS, J.M.
dc.contributor.authorROBLEDO, L.M.
dc.contributor.authorROTARU, F.
dc.contributor.authorSAED-SAMII, N.
dc.contributor.authorSÁNCHEZ-TEMBLEQUE, V.
dc.contributor.authorSTANOIU, M.
dc.contributor.authorTENGBLAD, O.
dc.contributor.authorTHUERAUF, M.
dc.contributor.authorTURTURICA, A.
dc.contributor.authorVAN DUPPEN, P.
dc.contributor.authorWARR, N.
dc.date.issued2018
dc.description.abstractEnThe occurrence of octupolar shapes in the Ba isotopic chain was recently established experimentally up to $N=90$. To further extend the systematics, the evolution of shapes in the most neutron-rich members of the $Z=56$ isotopic chain accessible at present, $^{148,150}$Ba, has been studied via $\beta$ decay at the ISOLDE Decay Station. This paper reports on the first measurement of the positive- and negative-parity low-spin excited states of $^{150}$Ba and presents an extension of the $\beta$-decay scheme of $^{148}$Cs. Employing the fast timing technique, half-lives for the $2_1^+$ level in both nuclei have been determined, resulting in $T_{1/2}=1.51(1)$ ns for $^{148}$Ba and $T_{1/2}=3.4(2)$ ns for $^{150}$Ba. The systematics of low-spin states, together with the experimental determination of the $B(E2:2^+ \rightarrow 0^+$) transition probabilities, indicate an increasing collectivity in $^{148–150}$Ba, towards prolate deformed shapes. The experimental data are compared to symmetry conserving configuration mixing (SCCM) calculations, confirming an evolution of increasingly quadrupole deformed shapes with a definite octupolar character.
dc.language.isoen
dc.title.enEvolution of deformation in neutron-rich Ba isotopes up to $A=150$
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.97.024305
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
bordeaux.journalPhys.Rev.C
bordeaux.page024305
bordeaux.volume97
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-01714259
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01714259v1
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