Author: C. Morse |  Citation: Nucl. Data Sheets 182, 167 (2022) |  Cutoff date: 14-Sep-2021 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-3315 keV SYS(n)= 5519 keV SYS(p)= 3509 keV SYQ(α)= 10900 keV SY
Reference: 2021WA16

  A  281Cn α decay (0.18 S) 

General Comments:

$ 277Ds has been observed as the α-decay daughter of 281Cn at LBNL (2010El06) and JINR (2015Ut02,2018Ut02). 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 previously observed in the literature allowed decays to be assigned 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-)=611, ΔS(n)=674, ΔS(p)=661, ΔQ(α)=119 (2021Wa16)

Q-value: S(2n)=12716 syst 519, S(2p)=5978 syst 711 (2021Wa16)

XREF T1/2(level)
  0A 3.5 ms +21-10 
% α = 100
% SF ≤ 12.5

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Additional Level Data and Comments:


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