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

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-1792 keV SYS(n)= 6798 keV SYS(p)= 3411 keV SYQ(α)= 7920 keV SY
Reference: 2021WA16

  A  271Bh α decay (1.5 S) 

General Comments:

$ 267Db has been observed as the α-decay daughter of 271Bh at JINR (2004Og03,2013Og01) and GSI (2013Ru11). Events were identified by the observation of chains of α-decaying nuclei, terminated by spontaneous fission. Comparison of the properties of the chains with those observed in previous studies allowed the assignment of individual decays to specific nuclei.

$ 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-)=457, ΔS(n)=469, ΔS(p)=557, ΔQ(α)=300 (2021Wa16)

Q-value: S(2n)=12511 syst 436, S(2p)=8797 syst 663 (2021Wa16)

XREF T1/2(level)
  0A 79 m +94-28 
% SF = 100
% α ≤ 25

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Additional Level Data and Comments:


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