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

 Full ENSDF file | Adopted Levels (PDF version) 

S(n)= 5919 keV SYS(p)= 2948 keV SYQ(α)= 1.056×104 keV 7
Reference: 2021WA16

General Comments:

$ 285Fl has been observed in the 242Pu(48Ca,5n) reaction at LBNL (2010El06) and the 240Pu(48Ca,3n) reaction at JINR (2015Ut02,2018Ut02). Events were identified based on the observation of chains of α-decaying nuclei terminated by spontaneous fission. The observed decay properties were compared to those in the literature in order to assign 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: ΔS(n)=770, ΔS(p)=669 (2021Wa16)

Q-value: S(2p)=4983 syst 736, Q(εp)=1228 syst 863 (2021Wa16)

  0 101 ms +59-27 
% α = 100
% SF ≤ 12.5

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Additional Level Data and Comments:


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