K isomers in atomic nuclei

Walker, P. M.; Kondev, F. G.

doi:10.1140/epjs/s11734-024-01096-4

K isomers in atomic nuclei

Journal Article · Thu Feb 01 23:00:00 EST 2024 · European Physical Journal. Special Topics

DOI:https://doi.org/10.1140/epjs/s11734-024-01096-4· OSTI ID:2283779

; Kondev, F. G.

Abstract

The properties of K isomers are reviewed. Energies and decay hindrance factors are considered in detail for selected isomers in the $$$$A \approx $$$$ $A \approx$ 160–190 region, focusing on pairing effects and the key K -mixing mechanisms that influence $$$$\gamma $$$$ $γ$ -ray decay rates. The $$$$\beta $$$$ $β$ -decay of K isomers is studied, indicating that, far from the valley of $$$$\beta $$$$ $β$ stability, high- K $$$$\beta $$$$ $β$ -decaying isomers will populate high- K states in the daughter nuclei. The challenges of revealing predicted, but as-yet undiscovered, long-lived isomers in the neutron-rich $$$$N \approx 116$$$$ $N \approx 116$ prolate–oblate shape transition region are highlighted, and the occurrence of oblate high- K isomers is discussed. The 2015 multi-quasiparticle K -isomer table of Kondev, Dracoulis, and Kibédi is updated.

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Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 2283779

Alternate ID(s):: OSTI ID: 2529416

Journal Information:: European Physical Journal. Special Topics, Journal Name: European Physical Journal. Special Topics Journal Issue: 5 Vol. 233; ISSN 1951-6355

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: France

Language:: English

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