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

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-2958 keV SYS(n)= 5882 keV SYS(p)= 4223 keV SYQ(α)= 8625 keV SY
Reference: 2021WA16

  A  271Hs α decay 

General Comments:

$ 267Sg has been observed in gas-phase chemistry experiments as the α-decay daughter of 271Hs at GSI (2006Dv01,2008Dv02). Events were identified based on the observation of correlated chains of α-decaying nuclei, terminated by spontaneous fission.

$ 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-)=371, ΔS(n)=358, ΔS(p)=385, ΔQ(α)=212 (2021Wa16)

Q-value: S(2n)=13130 syst 296, S(2p)=7461 syst 445 (2021Wa16)

XREF T1/2(level)
  0A 84 s +55-24 
% SF = 83
% α = 17

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Additional Level Data and Comments:


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