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Study of octupole correlations in 90Zr and 91Zr isotopes

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dc.contributor.authorIskra, Łukasz
dc.contributor.authorMarginean, R.
dc.contributor.authorBottoni, S.
dc.contributor.authorN. Marginean
dc.contributor.authorFornal, Bogdan
dc.contributor.authorLeoni, S.
dc.contributor.authorG. Colo
dc.contributor.authorL. Stan
dc.contributor.authorR. Borcea
dc.contributor.authorM. Boromiza
dc.contributor.authorS. C˘alinescu
dc.contributor.authorCieplicka-Oryńczak, N.
dc.contributor.authorC. Clisu-Stan
dc.contributor.authorC. Costache
dc.contributor.authorF.C.L. Crespi
dc.contributor.authorD. Filipescu
dc.contributor.authorN. Florea
dc.contributor.authorI. Gheorghe
dc.contributor.authorA. Ionescu
dc.contributor.authorR. Lica
dc.contributor.authorC. Mihai
dc.contributor.authorR.E. Mihai
dc.contributor.authorC.R. Nita
dc.contributor.authorS. Pascu
dc.contributor.authorC. Petrone
dc.contributor.authorS. Toma
dc.contributor.authorA. Turturica
dc.contributor.authorS. Ujeniuc
dc.date.accessioned2025-01-29T13:04:03Z
dc.date.available2025-01-29T13:04:03Z
dc.date.issued2024-12-13
dc.description.abstractThe B(E3) transition strengths in 90Zr and 91Zr isotopes were determined based on the half-life measurements of the first 3− and (11/2)− states, i.e., T1/2 = 7.8(16) ps and 500(16) ps, respectively. The plunger method and fast-timing techniques were employed. The B(E3) values of 16(3) and 20.5(7) W.u. for 90Zr and 91Zr were derived, pointing to a sizable octupole collectivity in both cases. The 90Zr value complements the systematics of the octupole strength in even-even Zr isotopic chain, revealing a smooth trend between A = 90 and 96, which is in agreement with the pattern of octupole strength predicted by quasiparticle random phase approximation calculations. In 91Zr, the hybrid configuration mixing model describes the (11/2)− low-energy strength in terms of a coupling of the unpaired neutron with the 3− octupole excitation of the 90Zr core, predicting a slight decrease of octupole strength which is in contrast with the experimental result. This suggests a more complex structure for the (11/2)− state in 91Zr than predicted by the weak-coupling limit.
dc.description.grantnumberNo. 2020/39/D/ST2/03510
dc.description.sponsorshipThis work was supported by the Polish National Science Centre, Poland, under Research Projects No. 2020/39/D/ST2/03510, the Romanian MCID Nucleu Program No. PN 23 21 01 02, and the Italian Istituto Nazionale di Fisica Nucleare.
dc.identifier.citationPHYSICAL REVIEW C 110, 064312 (2024)
dc.identifier.urihttps://rifj.ifj.edu.pl/handle/item/433
dc.identifier.urihttps://doi.org/10.1103/PhysRevC.110.064312
dc.publisherPHYSICAL REVIEW C
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleStudy of octupole correlations in 90Zr and 91Zr isotopes
dc.typeOther

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