ADOPTED LEVELS for 248Es
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 204, 374 (2025) | Cutoff date: 30-Jun-2024
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-1600 keV SY | S(n)= 6350 keV SY | S(p)= 3100 keV SY | Q(α)= 7160 keV SY | ||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (2-,0+) | 24 m 3 % ECSF = 3.5×10-4 18 % ε ≈ 99.75 % α ≈ 0.25 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (2-,0+) | 24 m 3 % ECSF = 3.5×10-4 18 % ε ≈ 99.75 % α ≈ 0.25 | %ε-delayed fission measured by 2001Sh09. Other: 3×10-5% (1980Ga07), a factor of 10 smaller than reported by 2001Sh09. |
Other then the Q record, no changes were made in this dataset from the previous evaluation 2014Ma86
Q-value: ΔQ(β-)=50, ΔS(n)=60, ΔS(p)=50, ΔQ(α)=50 (syst,2021Wa16)
Q-value: S(2n)=13660 100, S(2p)=8250 80, Q(ε)=3060 50 (syst,2021Wa16)