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M1 And E2 Transition Rates From Core-Excited States In Semi-Magic Ru-94
Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden;Istanbul Univ, Fac Sci, Dept Phys, TR-34134 Istanbul, Turkey.
Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden;Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
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2018 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 54, no 9, article id 145Article in journal (Refereed) Published
Abstract [en]

Lifetimes of high-spin states have been measured in the semi-magic (N = 50) nucleus Ru-94. Excited states in Ru-94 were populated in the Ni-58(Ca-40, 4p)Ru-94* fusion-evaporation reaction at the Grand Accelerateur National d'Ions Lourds (GANIL) accelerator complex. DSAM lifetime analysis was performed on the Doppler broadened line shapes in energy spectra obtained from gamma-rays emitted while the residual nuclei were slowing down in a thick 6 mg/cm(2) metallic Ni-58 target. In total eight excited-state lifetimes in the angular momentum range I = (13-20)h have been measured, five of which were determined for the first time. The corresponding B(M1) and B(E2) reduced transition strengths are discussed within the framework of large-scale shell model calculations to study the contribution of different particle-hole configurations, in particular for analyzing contributions from core-excited configurations.

Place, publisher, year, edition, pages
2018. Vol. 54, no 9, article id 145
National Category
Subatomic Physics Atom and Molecular Physics and Optics
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URN: urn:nbn:se:uu:diva-366155DOI: 10.1140/epja/i2018-12581-7ISI: 000443091000003OAI: oai:DiVA.org:uu-366155DiVA, id: diva2:1264335
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Swedish Research CouncilAvailable from: 2018-11-20 Created: 2018-11-20 Last updated: 2018-11-20Bibliographically approved

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Nyberg, Johan

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