ADOPTED LEVELS, GAMMAS for 154Lu
Author: N. Nica | Citation: Nucl. Data Sheets 200, 2 (2025) | Cutoff date: 22-Aug-2022
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-6940 keV SY | S(n)= 9360 keV SY | S(p)= -204 keV 14 | Q(α)= 4400 keV SY | ||
| Reference: 2021WA16 | |||||
| References: | |||
| A | 154Lu IT decay (35 μs) | B | 158Ta α decay (55 MS) |
| C | 158Ta α decay (36.0 MS) | D | 158Ta α decay (6.1 μs) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | B | (2-) | % ε ≈ 100 % α ≈ 0 | |||||
| 62 12 | A CD | (9+) | 1.12 s 8 % ε ≈ 100 | |||||
| 81.0 4 | A C | (8+) | 22.2 5 | 100 | 62 | (9+) | ||
| 118.9 5 | C | (8+,9+,10+) | 59.9 5 | | 62 | (9+) | ||
| 416.8 4 | A | (9+) | 335.9 3 358.1 6 | 100 11 7 3 | 81.0 62 | (8+) (9+) | ||
| 945.8 4 | A | (10+) | 529.1 4 | 100 | 416.8 | (9+) | ||
| 1261.8 4 | A | (10-) | 316.2 5 845.2 4 1202.5 5 | 18 4 86 8 100 18 | 945.8 416.8 62 | (10+) (9+) (9+) | ||
| 1284.4 4 | A | (11-) | 22.6 6 S 338.7 4 | 100 10 | 1261.8 945.8 | (10-) (10+) | ||
| 1461.4 4 | A | (11+) | 1402.3 4 | 100 | 62 | (9+) | ||
| 1499.8 5 | A | (12-) | 215.4 3 | 100 | (M1) | 1284.4 | (11-) | |
| 1872.8 6 | A | (12-) | 411.6 5 | 100 | 1461.4 | (11+) | ||
| 1970.6 5 | A | (13-) | 98.0 6 470.7 4 | 23 13 100 10 | 1872.8 1499.8 | (12-) (12-) | ||
| 2140.3 5 | A | (13+) | 640.6 4 678.8 4 | 100 10 26 4 | 1499.8 1461.4 | (12-) (11+) | ||
| 2283.8 5 | A | (14-) | 313.4 5 784.3 6 | 100 20 80 20 | 1970.6 1499.8 | (13-) (12-) | ||
| 2490.3 5 | A | (14+) | 206.8 4 350.0 3 519.5 4 | 18 2 100 10 37 4 | 2283.8 2140.3 1970.6 | (14-) (13+) (13-) | ||
| 2490.3+X | A | (15+) | XS | 100 | 2490.3 | (14+) | ||
| 2620.7+X 3 | A | (17+) | 35 µs 3 % IT = 100 | 130.4 3 | 100 | E2 | 2490.3+X | (15+) |
E(level): From a least-squares fit to the γ-ray energies with 59 and 2490.3+x held fixed
Jπ(level): Unless noted otherwise, the Jπ and configuration assignments for the levels above 70~keV are those suggested from 154Lu IT decay (1990Mc02) and are based on analogy to those in 150Ho and 152Tm.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 1499.8 | (12-) | 215.4 3 | (M1) | 0.422 | α=0.422 | |
| 2620.7+X | (17+) | 35 µs 3 % IT = 100 | 130.4 3 | E2 | 1.238 | B(E2)(W.u.)=0.00391 +37-32, α=1.238 21 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 62 | (9+) | 1.12 s 8 % ε ≈ 100 | Jπ(level): Configuration=((π h11/2)(ν f7/2)). |
| 81.0 | (8+) | Jπ(level): Configuration=((π h11/2)(ν f7/2)). | |
| 416.8 | (9+) | Jπ(level): Configuration=((π h11/2)(ν h9/2)). | |
| 945.8 | (10+) | Jπ(level): Configuration=((π h11/2)(ν h9/2)). Jπ(level): Configuration=((π h11/2)(ν h9/2)). | |
| 1261.8 | (10-) | Jπ(level): 3- octupole vibration built on the g.s. configuration. | |
| 1284.4 | (11-) | Jπ(level): 3- octupole vibration built on the g.s. configuration. | |
| 1499.8 | (12-) | Jπ(level): Configuration=((π h11/2)(ν i13/2)). | |
| 2620.7+X | (17+) | 35 µs 3 % IT = 100 | The configurational makeup of this level is discussed in the theoretical study of 2002Ma80. E(level): The configurational makeup of this level is discussed in the theoretical study of 2002Ma80. |
| E(level) | E(gamma) | Comments |
| 1284.4 | 22.6 | E(γ): From E(level) differences, transition not observed. |
All data are from the 154Lu IT decay, except for three levels populated in the 158Ta α decay.
Q-value: ΔQ(β-)=360, ΔS(n)=250, ΔQ(α)=280 (syst,2021Wa16)
Q-value: S(2n)=22390 280, S(2p)=2520 210, Q(εp)=7020 200 (syst,2021Wa16)