ADOPTED LEVELS for 285Fl
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 SY | S(p)= 2948 keV SY | Q(α)= 1.056×104 keV 7 | |||
| Reference: 2021WA16 |
| E(level) (keV) | T1/2(level) |
| 0 | 101 ms +59-27 % α = 100 % SF ≤ 12.5 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | 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)