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Ultrafast-timing lifetime measurements in Ru-94 and Pd-96: Breakdown of the seniority scheme in N=50 isotones
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2017 (English)In: PHYSICAL REVIEW C, ISSN 2469-9985, Vol. 95, no 1, article id 014313Article in journal (Refereed) Published
Abstract [en]

The advanced time-delayed gamma gamma(t) method has been applied to determine half-lives of low-lying states in the N = 50 isotones Ru-94 and Pd-96. The inferred experimental E2 strengths for the 4(+) -> 2(+) transitions in the two nuclei show a dramatic deviation with respect to the shell model predictions in the (f(5/2), p, g(9/2)) proton hole space in Sn-100. The anomalous behavior can be ascribed to a breakdown of the seniority quantum number in the pi g(9/2)(n) configuration due to particle-hole excitations across the N = Z = 50 shell as confirmed by large-scale shell model calculations.

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American Physical Society, 2017. Vol. 95, no 1, article id 014313
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Physical Sciences
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URN: urn:nbn:se:kth:diva-201228DOI: 10.1103/PhysRevC.95.014313ISI: 000391860300002Scopus ID: 2-s2.0-85009961881OAI: oai:DiVA.org:kth-201228DiVA, id: diva2:1075447
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QC 20170222

Available from: 2017-02-20 Created: 2017-02-20 Last updated: 2017-02-20Bibliographically approved

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Cederwall, B

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