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Coulomb and nuclear excitations of $^{70}$Zn and $^{68}$Ni at intermediate energy

dc.contributor.authorCALINESCU, S.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorSORLIN, O.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorMATEA, I.
dc.contributor.authorCARSTOIU, F.
hal.structure.identifierInstitut Pluridisciplinaire Hubert Curien [IPHC]
dc.contributor.authorDAO, D.D.
hal.structure.identifierInstitut Pluridisciplinaire Hubert Curien [IPHC]
dc.contributor.authorNOWACKI, F.
dc.contributor.authorDE ANGELIS, G.
dc.contributor.authorASTABATYAN, R.
dc.contributor.authorBAGCHI, S.
dc.contributor.authorBORCEA, C.
dc.contributor.authorBORCEA, R.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorCÁCERES, L.
dc.contributor.authorCIEMÁLA, M.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorCLÉMENT, E.
dc.contributor.authorDOMBRÁDI, Z.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorFRANCHOO, S.
dc.contributor.authorGOTTARDO, A.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGRÉVY, S.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGUERIN, H.
dc.contributor.authorHARAKEH, M.N.
dc.contributor.authorHARCA, I.M.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorKAMALOU, O.
dc.contributor.authorKMIECIK, M.
dc.contributor.authorKRASZNAHORKAY, A.
dc.contributor.authorKRZYSIEK, M.
dc.contributor.authorKUTI, I.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorLEPAILLEUR, A.
dc.contributor.authorLUKYANOV, S.
dc.contributor.authorMAJ, A.
dc.contributor.authorMASLOV, V.
dc.contributor.authorMAZUREK, K.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorMORFOUACE, P.
dc.contributor.authorMRAZEK, J.
dc.contributor.authorNEGOITA, F.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorNIIKURA, M.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorOLIVIER, L.
dc.contributor.authorPENIONZHKEVICH, Y.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorPERROT, L.
dc.contributor.authorPETRONE, C.
dc.contributor.authorPODOLYÁK, Z.
dc.contributor.authorRIGOLLET, C.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorROGER, T.
dc.contributor.authorROTARU, F.
dc.contributor.authorSOHLER, D.
dc.contributor.authorSTANOIU, M.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorSTEFAN, I.
dc.contributor.authorSTUHL, L.
hal.structure.identifierLaboratoire de Physique des 2 Infinis Irène Joliot-Curie [IJCLab]
dc.contributor.authorTHOMAS, J.C.
dc.contributor.authorVAJTA, Z.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorVANDEBROUCK, M.
dc.contributor.authorWIELAND, O.
dc.date.created2021
dc.date.issued2021
dc.identifier.issn2469-9985
dc.description.abstractEnThe reduced transition probabilities $B(E2; 0^+_{g.s.}\rightarrow2_1^+,2^+_2)$ in $^{70}$Zn and the full $B(E2; 0^+_{g.s.}\rightarrow2^+)$ strength up to S$_n$=7.79 MeV in $^{68}$Ni have been determined at the LISE/GANIL facility using the Coulomb-excitation technique at intermediate beam energy on a $^{208}$Pb target. The $\gamma$ rays emitted in-flight were detected with an array of 46 BaF$_2$ crystals. The angles of the deflected nuclei were determined in order to disentangle and extract the Coulomb and nuclear contributions to the excitation of the 2$^+$ states. The measured $B(E2; 0^+_{g.s.}\rightarrow2_1^+)$ of 1432(124) e$^2$fm$^4$ for $^{70}$Zn falls in the lower part of the published values which clustered either around 1600 or above 2000 e$^2$fm$^4$, while the $B(E2; 0^+_{g.s.}\rightarrow2^+_2)$ of 53(7) e$^2$fm$^4$ agrees very well with the two published values. The relatively low $B(E2; 0^+_{g.s.}\rightarrow2_1^+)$ of 301(38) e$^2$fm$^4$ for $^{68}$Ni agrees with previous studies and confirms a local magicity at $Z=28, N=40$. Combining the results of the low-energy spectra of $^{68}$Ni and $^{70}$Zn and their shell-model interpretations, it is interesting to notice that four different shapes (spherical, oblate, prolate and triaxial) are present. Finally, a summed $E2$ strength of only about 150 e$^2$fm$^4$ has been found experimentally at high excitation energy, likely due to proton excitations across the $Z=28$ gap. The experimental distribution of this high-energy $E2$ excitation agrees with SM calculations, but its strength is about two times weaker.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enCoulomb and nuclear excitations of $^{70}$Zn and $^{68}$Ni at intermediate energy
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.104.034318
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
dc.subject.halPhysique [physics]/Physique Nucléaire Théorique [nucl-th]
dc.identifier.arxiv2110.03932
bordeaux.journalPhysical Review C
bordeaux.page034318
bordeaux.volume104
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierin2p3-03369543
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-03369543v1
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