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Competing decay modes of a high-spin isomer in the proton-unbound nucleus 158Ta
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2015 (English)In: Acta Physica Polonica B, ISSN 0587-4254, E-ISSN 1509-5770, Vol. 46, no 3, 695-698 p.Article in journal (Refereed) Published
Abstract [en]

An isomeric state at high spin and excitation energy was recently observed in the proton-unbound nucleus 158Ta. This state was observed to decay by both α and γ decay modes. The large spin change required to decay via γ-ray emission incurs a lifetime long enough for α decay to compete. The α decay has an energy of 8644(11) keV, which is among the highest observed in the region, a partial half-life of 440(70) μs and changes the spin by 11h. In this paper, additional evidence supporting the assignment of this α decay to the high-spin isomer in 158Ta will be presented.

Place, publisher, year, edition, pages
2015. Vol. 46, no 3, 695-698 p.
Keyword [en]
Excited states, Gamma rays, Nuclear reactions, Alpha decay, Decay mode, Gamma-ray emission, Half lives, High spins, High-spin isomer, Isomeric state, Large spin, Isomers
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-167374DOI: 10.5506/APhysPolB.46.695ISI: 000353565500052ScopusID: 2-s2.0-84928630812OAI: diva2:815737

QC 20150601

Available from: 2015-06-01 Created: 2015-05-22 Last updated: 2015-06-12Bibliographically approved

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Andgren, KarinCederwall, BoHadinia, Baharak
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