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Multiparticle configurations of excited states in Lu-155
KTH, School of Engineering Sciences (SCI), Physics.
KTH, School of Engineering Sciences (SCI), Physics.ORCID iD: 0000-0002-1406-5695
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2016 (English)In: PHYSICAL REVIEW C, ISSN 2469-9985, Vol. 94, no 6, article id 064311Article in journal (Refereed) Published
Abstract [en]

Excited states in the neutron-deficient N = 84 nuclide Lu-155 have been populated by using the Pd-102(Ni-58, alpha p) reaction. The Lu-155 nuclei were separated by using the gas-filled recoil ion transport unit (RITU) separator and implanted into the Si detectors of the gamma recoil electron alpha tagging (GREAT) spectrometer. Prompt gamma-ray emissions measured at the target position using the JUROGAM Ge detector array were assigned to Lu-155 through correlations with alpha decays measured in GREAT. Structures feeding the (11/2(-)) and (25/2(-)) alpha-decaying states have been revised and extended. Shell-model calculations have been performed and are found to reproduce the excitation energies of several of the low-lying states observed to within an average of 71 keV. In particular, the seniority inversion of the 25/2(-) and 27/2(-) states is reproduced.

Place, publisher, year, edition, pages
2016. Vol. 94, no 6, article id 064311
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Physical Sciences
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URN: urn:nbn:se:kth:diva-199746DOI: 10.1103/PhysRevC.94.064311ISI: 000390262500001Scopus ID: 2-s2.0-85006137694OAI: oai:DiVA.org:kth-199746DiVA, id: diva2:1067719
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QC 20170123

Available from: 2017-01-23 Created: 2017-01-16 Last updated: 2017-01-23Bibliographically approved

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