Character of particle-hole excitations in 94Ru deduced from ?-ray angular correlation and linear polarization measurements

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dc.contributor.authorMoradi, F. Ghazi
dc.contributor.authorQi, C.
dc.contributor.authorCederwall, B.
dc.contributor.authorAtac, A.
dc.contributor.authorBaeck, T.
dc.contributor.authorLiotta, R.
dc.contributor.authorDoncel, M.
dc.date.accessioned2024-02-23T14:23:35Z
dc.date.available2024-02-23T14:23:35Z
dc.date.issued2014
dc.departmentNEÜen_US
dc.description.abstractLinear polarization and angular correlations of gamma-rays depopulating excited states in the neutron-deficient nucleus Ru-94(44)50 have been measured, enabling firm spin-parity assignments for several excited states in this nucleus. The deduced multipolarities of strong transitions in the yrast structure were found to be mostly of stretched M1, E1, and E2 types and, in most cases, in agreement with previous tentative assignments. The deduced multipolarity of the 1869 keV and the connecting 257 and 1641 keV transitions indicates that the state at 6358 keV excitation energy has spin parity 12(1)(-) rather than 12(3)(+) as proposed in previous works. The presence of a 12(1)(-) state is interpreted within the framework of large-scale shell-model calculations as a pure proton-hole state dominated by the pi(p(1/2)(-1)circle times g(9/2)(-5)) and pi(p(3/2)(-1) g(9/2)(-5)) configurations. A new positive-parity state is observed at 6103 keV and is tentatively assigned as 12(2)(+). The 14(1)(-) state proposed earlier is reassigned as 13(4)(-) and is interpreted as being dominated by neutron particle-hole core excitations. The strengths of several E1 transitions have been measured and are found to provide a signature of core-excited configurations.en_US
dc.description.sponsorshipSwedish Research Council (VR) [621-2010-4723, 621-2012-3805]; Hungarian Scientific Research Fund, OTKA [K100835]; French-Polish LEA COPIGAL; COPIN-IN2P3; European Union's Seventh Framework Program [262010]; STFC [ST/J000124/1, ST/L005727/1] Funding Source: UKRI; Science and Technology Facilities Council [ST/L005727/1, ST/J000124/1] Funding Source: researchfishen_US
dc.description.sponsorshipThis work was supported by the Swedish Research Council (VR) under Grants No. 621-2010-4723 and No. 621-2012-3805. The authors acknowledge the GAMMAPOOL Euroball owners committee for the use of the Neutron Wall and also the EXOGAM and DIAMANT Collaborations. We thank the operators of the GANIL cyclotrons for providing the beam, their cooperation, and technical support. We would also like to thank UK STFC for their collaboration. This work was supported in part by the Hungarian Scientific Research Fund, OTKA (Contract No. K100835) and French-Polish LEA COPIGAL and COPIN-IN2P3 agreements. The research leading to these results has received funding from the European Union's Seventh Framework Program under Grant Agreement No. 262010.en_US
dc.identifier.doi10.1103/PhysRevC.89.014301
dc.identifier.issn0556-2813
dc.identifier.issn1089-490X
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-84894470659en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevC.89.014301
dc.identifier.urihttps://hdl.handle.net/20.500.12452/13619
dc.identifier.volume89en_US
dc.identifier.wosWOS:000332148300001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmer Physical Socen_US
dc.relation.ispartofPhysical Review Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject[Keyword Not Available]en_US
dc.titleCharacter of particle-hole excitations in 94Ru deduced from ?-ray angular correlation and linear polarization measurementsen_US
dc.typeArticleen_US

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