α Decay of High-K Isomers in 270Ds and 266Hs in a Superfluid Tunneling Model

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We use the superfluid tunneling model (STM) to calculate the half-lives of ground-state α decays of even-even superheavy nuclei (SHN) with Z≥100. The experimental data are reproduced to accuracies comparable to other contemporary models of α decay of SHN. We apply the STM to the case of the α decaying high-K isomers identified in the decay chains of 270Ds. By accounting for the α-decay Q values, Qα, the angular momentum difference between initial and final states, L, and a reduction in the pairing gap, Δ, we are able to reproduce the observed α decay of the isomers, including the unusual competition between L≈10 and L≈0 α branches seen for the K isomer in 270Ds (Z=110).


External organisations
  • Lawrence Berkeley National Laboratory
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics


  • alpha decay, isomer decays, lifetimes & widths, nuclear structure and decays, superheavy elements
Original languageEnglish
Article number024333
Number of pages6
JournalPhysical Review C
Issue number2
Publication statusPublished - 2018 Feb 26
Publication categoryResearch

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