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Open Access Publications from the University of California

Precise absoluteγ-ray andβ−-decay branching intensities in the decay ofCu2967

  • Author(s): Chen, J
  • Kondev, FG
  • Ahmad, I
  • Carpenter, MP
  • Greene, JP
  • Janssens, RVF
  • Zhu, S
  • Ehst, D
  • Makarashvili, V
  • Rotsch, D
  • Smith, NA
  • et al.

© 2015 American Physical Society. Absolute γ-ray emission probabilities in the β- decay of Cu67 were measured by means of γ-ray and β - decay singles and β - γ coincidences. The new results, together with the known decay scheme of Cu67, were used to determine absolute β - decay branching intensities. The present data differ significantly from previously published values. In addition, the half-life of the Iπ=12- isomer in Zn67 was measured as T1/2=9.37(4) μs, in a good agreement with earlier measurements. From the analysis of the Fermi-Kurie plots, Qβ-(g.s.)=560.3(10) keV was deduced, which differs from the previously measured value of 577(8) keV but is in good agreement with Qβ-(g.s.)=561.3(15) keV recommended in the latest Atomic Mass Evaluation.

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