ADOPTED LEVELS, GAMMAS for 154Tm
Author: N. Nica | Citation: Nucl. Data Sheets 200, 2 (2025) | Cutoff date: 22-Aug-2022
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-4495 keV 14 | S(n)= 8526 keV 19 | S(p)= 1249 keV 17 | Q(α)= 5093.8 keV 26 | ||
Reference: 2021WA16 |
References: | |||
A | 154Yb ε decay | B | 158Lu α decay |
C | 144Sm(14N,4nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0 | ABC | (2-) | 8.1 s 3 % ε = 46 5 % α = 54 5 | |||||
133.2 2 | A | 1+ | 133.2 2 | 100 | E1 | 0 | (2-) | |
0+X | C | 9+ | 3.30 s 7 % IT = ? % ε = 42 5 % α = 58 5 | |||||
266.10+X 17 | C | (10+) | 266.1 2 | 100 | 0+X | 9+ | ||
745.12+X 9 | C | 11+ | 745.1 1 | 100 | E2 | 0+X | 9+ | |
751.79+X 10 | C | 11+ | 751.8 1 | 100 | E2 | 0+X | 9+ | |
1035.09+X 16 | C | (12+) | 290.0 2 769.0 3 | 65 100 | 745.12+X 266.10+X | 11+ (10+) | ||
1134.98+X 13 | C | 13+ | 383.2 1 | 100 | E2 | 751.79+X | 11+ | |
1323.34+X 13 | C | 13+ | 578.2 1 | 100 | E2 | 745.12+X | 11+ | |
1674.06+X 14 | C | 14+ | 350.7 1 639.0 2 | 100 <98 | M1+E2 | 1323.34+X 1035.09+X | 13+ (12+) | |
1814.81+X 19 | C | 15+ | 140.6 3 679.6 3 | 100 | E2 | 1674.06+X 1134.98+X | 14+ 13+ | |
2145.25+X 16 | C | 16+ | 471.2 1 | 100 | E2 | 1674.06+X | 14+ | |
2424.55+X 17 | C | 15+ | 279.3 1 609.6 3 ? 1289.9 3 | 100 10 25 | M1+E2 | 2145.25+X 1814.81+X 1134.98+X | 16+ 15+ 13+ | |
2453.99+X 25 | C | 16+ | 639.2 2 | 100 | M1+E2 | 1814.81+X | 15+ | |
2514.42+X 18 | C | 16+ | 89.9 1 699.2 3 | 100 21 | M1+E2 | 2424.55+X 1814.81+X | 15+ 15+ | |
2616.74+X 20 | C | 17+ | 102.3 1 802.0 3 | 100 62 | M1+E2 | 2514.42+X 1814.81+X | 16+ 15+ | |
2742.65+X 22 | C | 19+ | 125.9 1 | 100 | E2 | 2616.74+X | 17+ | |
2750.37+X 26 | C | 17+ | 296.4 2 935.6 3 | 80 100 | M1+E2 E2 | 2453.99+X 1814.81+X | 16+ 15+ | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2881.58+X 27 | C | 138.9 2 | 100 | 2742.65+X | 19+ | |||
3240.45+X 31 | C | 358.9 2 | 100 | 2881.58+X | ||||
3409.96+X 30 | C | 19+ | 659.6 2 | 100 | [E2] | 2750.37+X | 17+ | |
3420.87+X 29 | C | 20+ | 678.1 3 | 100 | M1+E2 | 2742.65+X | 19+ | |
3471.61+X 34 | C | 19+ | 721.3 3 | 100 | E2 | 2750.37+X | 17+ | |
3740.45+X 30 | C | 20+ | 268.9 3 330.5 2 | 100 88 | M1+E2 M1+E2 | 3471.61+X 3409.96+X | 19+ 19+ | |
4056.99+X 29 | C | 22+ | 636.2 2 1175.3 3 | 100 60 | E2 | 3420.87+X 2881.58+X | 20+ | |
4090.77+X 29 | C | 669.6 3 1348.2 3 | 22 100 | 3420.87+X 2742.65+X | 20+ 19+ | |||
4486.26+X 30 | C | 23+ | 395.4 2 429.3 2 | 61 100 | M1+E2 | 4090.77+X 4056.99+X | 22+ | |
4498.11+X 30 | C | 21+ | 757.7 2 1257.7 3 | 100 62 | M1+E2 | 3740.45+X 3240.45+X | 20+ | |
4667.9+X 4 | C | 577.1 3 | 100 | 4090.77+X | ||||
4865.7+X 5 | C | 197.8 2 | 100 | 4667.9+X | ||||
4996.80+X 30 | C | 23+ | 498.7 1 510.4 3 | 100 64 | E2 | 4498.11+X 4486.26+X | 21+ 23+ | |
5208.80+X 32 | C | 25+ | 212.0 1 | 100 | E2 | 4996.80+X | 23+ | |
5974.3+X 4 | C | 765.5 2 | 100 | 5208.80+X | 25+ | |||
6141.2+X 4 | C | 166.9 1 | 100 | E1 | 5974.3+X |
E(level): For the levels above the 9+ level, the values are from a least-squares fit to the γ energies as given in the heavy-ion data set.
M(γ): From conversion-electron data in 144Sm(14N,4nγ) dataset (2002Fo07) unless otherwise mentioned
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - γ cascade based on 9+ level | |||||||
0+X | 9+ | 3.30 s 7 % IT = ? % ε = 42 5 % α = 58 5 | |||||
751.79+X 10 | 11+ | 751.8 1 | 100 | E2 | 0+X | 9+ | |
1134.98+X 13 | 13+ | ||||||
1814.81+X 19 | 15+ | 140.6 3 679.6 3 | 100 | E2 | 1674.06+X 1134.98+X | 14+ 13+ | |
2750.37+X 26 | 17+ | 296.4 2 935.6 3 | 80 100 | M1+E2 E2 | 2453.99+X 1814.81+X | 16+ 15+ | |
3471.61+X 34 | 19+ | 721.3 3 | 100 | E2 | 2750.37+X | 17+ | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - γ cascade based on 21+ level | |||||||
4498.11+X 30 | 21+ | ||||||
4996.80+X 30 | 23+ | 498.7 1 510.4 3 | 100 64 | E2 | 4498.11+X 4486.26+X | 21+ 23+ | |
5208.80+X 32 | 25+ | ||||||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - γ cascade based on (10+) level | |||||||
266.10+X 17 | (10+) | ||||||
1035.09+X 16 | (12+) | 290.0 2 769.0 3 | 65 100 | 745.12+X 266.10+X | 11+ (10+) | ||
1674.06+X 14 | 14+ | ||||||
2145.25+X 16 | 16+ | 471.2 1 | 100 | E2 | 1674.06+X | 14+ |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
133.2 | 1+ | 133.2 2 | E1 | 0.1562 | α=0.1562 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | (2-) | 8.1 s 3 % ε = 46 5 % α = 54 5 | Q=+0.4 9, μ=-1.14 2 From an evaluation of data on nuclear rms charge radii, 2014An02 report <r2>1/2=5.076~fm~17. E(level): From an evaluation of data on nuclear rms charge radii, 2014An02 report <r2>1/2=5.076~fm~17. |
0+X | 9+ | 3.30 s 7 % IT = ? % ε = 42 5 % α = 58 5 | Q=-0.2 4, μ=+5.91 5 Δ<r2>(169Tm-154Tm(J=9))=1.522 fm2 15 (2000Ba16). E(level): Δ<r2>(169Tm-154Tm(J=9))=1.522 fm2 15 (2000Ba16). |
2742.65+X | 19+ | Possible isomer from 2002Fo07 in 144Sm(14N,4nγ) dataset. |
E(level) | E(gamma) | Comments |
133.2 | 133.2 | M(γ): From conversion-electron data in 154Yb ε decay (1988Vi02) |
1674.06+X | 639.0 | I(γ): See the comment on this value in the heavy-ion data set. |
2453.99+X | 639.2 | I(γ): See the comment on this value in the heavy-ion data set. |
3409.96+X | 659.6 | M(γ): M1+E2 based on α(K)exp contradicts ΔJ=2 transition from level scheme |
Data are primarily from 144Sm(14N,4nγ), with minor additions from 154Yb ε decay, 154Tm α decay (8.1 s), and 154Tm α decay (3.30 s).
Q-value: S(2n)=18850 60, S(2p)=5400 19, Q(εp)=3296 15 (2021Wa16)