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

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-2899 keV SYS(n)= 6554 keV SYS(p)= 1928 keV SYQ(α)= 1.048×104 keV 5
Reference: 2021WA16

  A  279Rg α decay (0.09 S) 

General Comments:

$ 275Mt has been observed as the α-decay daughter of 279Rg at JINR (2004Og03,2013Og01) and GSI (2013Ru11). Events were identified by the observation of chains of correlated α decays, terminated by spontaneous fission. Comparison of the chains with previous studies 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-)=516, ΔS(n)=540, ΔS(p)=608 (2021Wa16)

Q-value: S(2n)=12158 syst 575, S(2p)=6495 syst 761 (2021Wa16)

XREF T1/2(level)
  0A 20 ms +24-7 
% α = 100
% SF ≤ 25

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Additional Level Data and Comments:


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