ADOPTED LEVELS for 285Cn
Author: C. Morse | Citation: Nucl. Data Sheets 182, 167 (2022) | Cutoff date: 14-Sep-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-2682 keV SY | S(n)= 5400 keV SY | S(p)= 4173 keV SY | Q(α)= 9388 keV SY | ||
| Reference: 2021WA16 |
| References: | |||
| A | 289Fl α decay (2.4 S) | ||
| E(level) (keV) | XREF | T1/2(level) |
| 0 | A | 33 s +10-6 % α = 100 % SF < 6 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
$ 285Cn has been observed as the α-decay daughter of 289Fl 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 based on the observation of time- and position-correlated α-decay chains terminated by spontaneous fission. The decay properties of the chains were compared to those known in the literature to assign each decay to specific nuclei.
$ Other: One decay chain containing 285Cn 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-)=926, ΔS(n)=915, ΔS(p)=712, ΔQ(α)=116 (2021Wa16)
Q-value: S(2n)=12393 syst 797, S(2p)=7321 syst 712 (2021Wa16)