ADOPTED LEVELS for 251Lr
Author: C. Morse | Citation: Nucl. Data Sheets 189, 111 (2023) | Cutoff date: 23-Sep-2022
Full ENSDF file | Adopted Levels (PDF version)
| S(p)= 1025 keV SY | Q(α)= 9469 keV SY | ||||
| Reference: 2021Wa16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0 | (7/2-) | 24.4 ms +70-45 % α ≈ 100 |
| 117 27 | (1/2-) | 42 ms +42-14 % α ≈ 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
$ 2022Hu21: First observation of the nucleus 251Lr. The experiment was performed using AGFA at Argonne National Laboratory using the 203Tl(50Ti,2n) reaction at a beam energy of 237 MeV. 251Lr was identified based on spatial and temporal correlations between evaporation residues detected at the focal plane of AGFA and subsequent α-decays linking 251Lr with known decays of the daughter nuclei.
Q-value: ΔS(p)=283, ΔQ(α)=288 (2021Wa16)
Q-value: S(2p)=3929 syst 259, Q(εp)=2142 syst 220 (2021Wa16)