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

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-2060 keV SYS(n)= 5119 keV SYS(p)= 4526 keV SYQ(α)= 9473 keV SY
Reference: 2021WA16

  A  285Cn α decay (33 S) 

General Comments:

$ 281Ds has been observed as the α-decay daughter of 285Cn at JINR (2000Og05,2002Og09,2004Og07), GSI (2011Ga19,2012Ho12) and RIKEN (2017Ka66); and in gas-phase chemistry experiments at JINR (2010Wi14) and GSI (2014Ya33). Events were identified by the observation of chains of α-decaying nuclei terminated by spontaneous fission. Comparison of the properties of the decay chains with those in the literature allowed individual decays to be assigned to specific nuclei.

$ Other: One decay chain containing 281Ds is reported in 1999Og10, but these results have not been reproduced.

$ 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-)=918, ΔS(n)=896, ΔS(p)=776, ΔQ(α)=208 (2021Wa16)

Q-value: S(2n)=11894 syst 780, S(2p)=7805 syst 776 (2021Wa16)

XREF T1/2(level)
  0A 12 s +4-2 
% SF = 94
% α = 6

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Additional Level Data and Comments:


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