Band structures, lifetimes, and shape coexistence in 130La

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dc.authoridIonescu-Bujor, Manuela/0000-0003-3482-2144
dc.authoridMihai, Constantin/0000-0003-1103-1534
dc.authoridMihai, Radu/0000-0002-2809-7946
dc.authoridNegret, Alexandru/0000-0002-1285-704X
dc.authoridSAYGI, BAHADIR/0000-0001-5406-506X
dc.authoridAYDIN, Sezgin/0000-0001-5380-1512
dc.authoridToma, Sebastian/0000-0002-4486-8579
dc.contributor.authorIonescu-Bujor, M.
dc.contributor.authorAydin, S.
dc.contributor.authorIordachescu, A.
dc.contributor.authorMarginean, N.
dc.contributor.authorPascu, S.
dc.contributor.authorBucurescu, D.
dc.contributor.authorCostache, C.
dc.date.accessioned2025-03-17T12:25:43Z
dc.date.available2025-03-17T12:25:43Z
dc.date.issued2020
dc.departmentTarsus Üniversitesi
dc.description.abstractThe level structure of La-130 has been investigated using the (121)sb(C-12, 3n) reaction with the ROSPHERE array at IFIN-HH, Bucharest. The level scheme was significantly extended with the observation of 45 new states and 100 new transitions. Several band structures have been identified and a clear connection with the lower-lying states has been established. A lifetime of tau = 3.6(2) ns has been measured for the 346-keV 6(-) state by the in-beam fast timing technique. The lifetimes of 18 high-spin states have been determined by applying the Doppler-shift attenuation method. The deformations derived from the experimental B(E2) transition strengths indicate distinct coexisting shapes at high spins in La-130. The experimental properties of both low- and high-spin states were compared with theoretical calculations performed in the frame of the two-quasiparticles-plus-rotor model. Two new negative-parity decoupled bands, with a deduced quadrupole deformation beta(2) = 0.150(15), were interpreted by coupling the proton in the 1/2[550] and 3/2[541] orbitals with the odd neutron occupying mainly the low-Omega orbitals from the d(3/2) and 5(1/2) states. A quadrupole deformation beta(2) = 0.220(17) was derived for a newly identified positive-parity decoupled band. This enhanced deformation was attributed to the involvement in the band configuration of the Omega = 1/2 (f(7/2), h(9/2)) intruder neutron orbital. The multiparticle configuration pi g(7/2)(h(11/2))(2) circle times nu (h(11/2)) was assigned to a high-spin negative-parity dipole band, based on the comparison of the experimental B(M1) transition strengths with values calculated by applying the geometrical model of Donau and Frauendorf.
dc.description.sponsorshipMinistry of Education and Research, Romania [PN-19-06-01-02]
dc.description.sponsorshipAuthors are thankful to the FN Tandem staff of the Horia Hulubei National Institute of Physics and Nuclear Engineering for the good quality delivered beam. This work was supported by the Ministry of Education and Research, Romania, Contract No. PN-19-06-01-02.
dc.identifier.doi10.1103/PhysRevC.102.044311
dc.identifier.issn2469-9985
dc.identifier.issn2469-9993
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85094124987
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1103/PhysRevC.102.044311
dc.identifier.urihttps://hdl.handle.net/20.500.13099/1825
dc.identifier.volume102
dc.identifier.wosWOS:000579350100002
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review C
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectHigh-Spin States
dc.subjectRotational Bands
dc.subjectOdd
dc.subjectNilsson
dc.subjectModel
dc.titleBand structures, lifetimes, and shape coexistence in 130La
dc.typeArticle

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