Author: C. Morse |  Citation: Nucl. Data Sheets 182, 130 (2022). |  Cutoff date: 14-Sep-2021 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-3893 keV SYS(n)= 7411 keV SYS(p)= 2141 keV SYQ(α)= 9230 keV SY
Reference: 2021WA16

General Comments:

$ 267Bh has been observed in the 249Bk(22Ne,4n) reaction at LBNL (2000Wi15) and at the Paul Scherrer Institute (2000Ei05), and in the 248Cm(23Na,4n) reaction at RIKEN (2009Mo12). Events were identified by the observation of chains of α-decaying nuclei. Comparison of the properties of these chains with previous studies allowed individual decays to be assigned to specific nuclei.

$ 2020Ha27 raises the possibility that previous observations of 267Bh actually correspond to 266Bh, based on a revision of the decay properties of 266Bh discussed in that work.

$ Half-lives, branching ratios, and α-decay energies in this evaluation have been computed from the individual events listed in the references above. Half-life uncertainties have been computed according to the method of 1984Sc13. An additional 10 keV systematic uncertainty is assumed for the α-decay energies, which is added in quadrature to the averaged statistical uncertainty.

Q-value: ΔQ(β-)=279, ΔS(n)=309, ΔS(p)=359, ΔQ(α)=202 (2021Wa16)

Q-value: S(2n)=13773 syst 355, S(2p)=6195 syst 345 (2021Wa16)

  0 14 s +6-3 
% α = 100
% SF < 8

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Additional Level Data and Comments:


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