ADOPTED LEVELS for 269Ds
Author: C. Morse | Citation: Nucl. Data Sheets 182, 167 (2022) | Cutoff date: 14-Sep-2021
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 6885 keV SY | S(p)= 1605 keV SY | Q(α)= 1.151×104 keV 3 | |||
| Reference: 2021WA16 | |||||
| E(level) (keV) | T1/2(level) |
| 0 | 0.18 ms +21-6 % α = 100 % SF ≤ 25 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
$ 269Ds has been observed in the 208Pb(62Ni,n) reaction at GSI (1995Ho03). Events were identified based on the observation of chains of α-decaying nuclei, correlated in time and position. Comparison of the decay properties of the chains with the literature allowed individual decays to be assigned to specific nuclei.
$ The data from 1995Ho03 was reanalyzed in 2002Ho11, and the left-most event in Fig. 5 was found to be reported in error.
$ 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)=303, ΔS(p)=235 (2021Wa16)
Q-value: S(2n)=15188 syst 206, S(2p)=2401 syst 100, Q(εp)=4578 syst 302 (2021Wa16)