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Spectroscopy at the two-proton drip line: Excited states in 158W
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2017 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 772, p. 703-707Article in journal (Refereed) Published
Abstract [en]

Excited states have been identified in the heaviest known even-Z N=84 isotone 158W, which lies in a region of one-proton emitters and the two-proton drip line. The observation of γ-ray transitions feeding the ground state establishes the excitation energy of the yrast 6+ state confirming the spin-gap nature of the α-decaying 8+ isomer. The 8+ isomer is also expected to be unbound to two-proton emission but no evidence for this decay mode was observed. An upper limit for the two-proton decay branch has been deduced as b2p≤ 0.17% at the 90% confidence level. The possibility of observing two-proton emission from multiparticle isomers in nearby nuclides is considered.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 772, p. 703-707
Keywords [en]
Multiparticle excited states, Proton radioactivity
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-212230DOI: 10.1016/j.physletb.2017.07.031ISI: 000411369700099Scopus ID: 2-s2.0-85026452245OAI: oai:DiVA.org:kth-212230DiVA, id: diva2:1134225
Note

QC 20170818

Available from: 2017-08-18 Created: 2017-08-18 Last updated: 2017-11-06Bibliographically approved

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