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

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-2614 keV SYS(n)= 6624 keV SYS(p)= 2276 keV SYQ(α)= 9900 keV SY
Reference: 2021WA16

  A  285Nh α decay (0.93 S) 

General Comments:

$ 281Rg has been observed as the α-decay daughter of 285Nh at JINR (2011Og04,2012Og02,2012Og06,2013Og01,2013Og04) and GSI (2019Kh04). Events were identified based on the observation of time- and position-correlated chains of α-decaying nuclei, terminated by spontaneous fission. Comparison of the decay chains to previous observations allowed individual 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-)=870, ΔS(n)=939, ΔS(p)=1076, ΔQ(α)=400 (2021Wa16)

Q-value: S(2n)=12531 syst 882, S(2p)=6830 syst 1024 (2021Wa16)

XREF T1/2(level)
  0A 15 s +4-3 
% α = 18
% SF = 82

Back to top

Back to top

Additional Level Data and Comments:


Back to top