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Partial conservation of seniority and its unexpected influence on E2 transitions in g(9/2) nuclei
KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.ORCID-id: 0000-0002-1406-5695
2017 (engelsk)Inngår i: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 773, s. 616-619Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

There exist two uniquely defined v = 4 states in systems within a j = 9/2 subshell, which automatically conserve seniority and do not mix with other states. Here I show that the partial conservation of seniority plays an essential role in our understanding of the electric quadrupole transitions of the semimagic nuclei involving j = 9/2 subshells, including the long-lived 8(+) isomer in (94) Ru. The effects of configuration mixing from neighboring subshells on the structure of those unique states are analyzed. It is shown that a sharp transition from pure seniority coupling to a significant mixture between the v = 2 and v = 4 states may be induced by the cross-orbital non-diagonal interaction matrix elements. Such strong mixture is essential to explain the observed E2 transition properties of N = 50 isotones Pd-96 and Ru-94.

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ELSEVIER SCIENCE BV , 2017. Vol. 773, s. 616-619
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URN: urn:nbn:se:kth:diva-217441DOI: 10.1016/j.physletb.2017.09.025ISI: 000413294200091Scopus ID: 2-s2.0-85031721049OAI: oai:DiVA.org:kth-217441DiVA, id: diva2:1158129
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QC 20171117

Tilgjengelig fra: 2017-11-17 Laget: 2017-11-17 Sist oppdatert: 2017-11-17bibliografisk kontrollert

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