ADOPTED LEVELS, GAMMAS for 148Pm
Author: N. Nica | Citation: Nucl. Data Sheets 208, 1 (2026) | Cutoff date: 17-Jan-2026
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=2470 keV 6 | S(n)= 5895 keV 6 | S(p)= 6008 keV 6 | Q(α)= 1460 keV 6 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 148Pm IT decay (41.29 d) | B | 148Nd(p,nγ) |
| C | 149Sm(d,3He) | D | 150Sm(μ-,2nγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 0.0 | ABCD | 1- | 5.368 d 7 % β- = 100 | ||||
| 75.70 25 | ABCD | 1-,2- | 75.7 5 | M1 | 0.0 | 1- | |
| 137.1 6 | BC | ||||||
| 137.9 3 | ABCD | 5-,6- | 41.29 d 11 % IT = 4.2 6 % β- = 95.8 6 | 62.2 5 | E4 | 75.70 | 1-,2- |
| 215.3 4 | BC | 78.2 5 | 137.1 | ||||
| 219.9 3 | BCD | 219.9 5 | 0.0 | 1- | |||
| 292.0 3 | B | 154.1 5 216.3 5 292.0 5 | 137.9 75.70 0.0 | 5-,6- 1-,2- 1- | |||
| 302.9 4 | B | 165.0 5 | 137.9 | 5-,6- | |||
| 304.7 3 | BC | 84.5 5 229.0 5 304.7 5 | 219.9 75.70 0.0 | 1-,2- 1- | |||
| 308.9 3 | BCD | 88.9 5 171.0 5 ? 233.2 5 308.9 5 | 219.9 137.9 75.70 0.0 | 5-,6- 1-,2- 1- | |||
| 363.4 4 | BC | 148.0 5 225.5 5 | 215.3 137.9 | 5-,6- | |||
| 379.7 3 | B | 76.8 5 ? 87.9 5 159.8 5 379.7 5 | 302.9 292.0 219.9 0.0 | 1- | |||
| 385.6 4 | B | 170.1 5 248.0 5 | 215.3 137.9 | 5-,6- | |||
| 388.1 3 | BC | 79.2 5 ? 83.4 5 ? 96.1 5 250.2 5 ? 312.4 5 388.1 5 | 308.9 304.7 292.0 137.9 75.70 0.0 | 5-,6- 1-,2- 1- | |||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 409.6 4 | BC | 194.4 5 271.7 5 333.9 5 ? | 215.3 137.9 75.70 | 5-,6- 1-,2- | |||
| 413.5 4 | BC | 121.6 5 337.7 5 | 292.0 75.70 | 1-,2- | |||
| 440.1 3 | B | 131.2 5 137.1 5 148.1 5 302.2 5 364.4 5 | 308.9 302.9 292.0 137.9 75.70 | 5-,6- 1-,2- | |||
| 452.0 3 | B | 88.6 5 149.1 5 160.0 5 314.1 5 376.3 5 | 363.4 302.9 292.0 137.9 75.70 | 5-,6- 1-,2- | |||
| 462 6 | C | ||||||
| 526.5 4 | BC | 112.9 5 223.6 5 311.1 5 | 413.5 302.9 215.3 | ||||
| 529.4 5 | BC | 119.8 5 141.3 5 | 409.6 388.1 | ||||
| 543.4 4 | B | 129.8 5 328.3 5 405.5 5 | 413.5 215.3 137.9 | 5-,6- | |||
| 545.7 4 | B | 157.6 5 166.0 5 236.8 5 241.0 5 253.7 5 ? 407.8 5 ? | 388.1 379.7 308.9 304.7 292.0 137.9 | 5-,6- | |||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 550.3 4 | BC | 162.2 5 186.9 5 247.4 5 258.3 5 ? 412.4 5 | 388.1 363.4 302.9 292.0 137.9 | 5-,6- | |||
| 561.3 4 | B | 173.1 5 181.5 5 341.6 5 485.5 5 ? | 388.1 379.7 219.9 75.70 | 1-,2- | |||
| 564.2 4 | BC | 154.6 5 176.1 5 184.5 5 200.8 5 272.2 5 ? 426.3 5 | 409.6 388.1 379.7 363.4 292.0 137.9 | 5-,6- | |||
| 573.1 3 | BC | 133.0 5 ? 193.4 5 264.2 5 268.4 5 281.0 5 435.2 5 | 440.1 379.7 308.9 304.7 292.0 137.9 | 5-,6- | |||
| 611.2 5 | BC | 197.8 5 395.8 5 | 413.5 215.3 | ||||
| 622.7 6 | B | 77.0 5 ? 318.0 5 | 545.7 304.7 | ||||
| 641.9 5 | BC | 333.0 5 422.0 5 | 308.9 219.9 | ||||
| 655.7 5 | BC | 215.6 5 246.1 5 270.2 5 ? | 440.1 409.6 385.6 | ||||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 660.5 6 | BC | 296.9 5 ? 351.6 5 | 363.4 308.9 | ||||
| 669.6 4 | B | 229.5 5 284.1 5 360.6 5 ? 364.8 5 | 440.1 385.6 308.9 304.7 | ||||
| 672.9 4 | B | 259.3 5 263.3 5 284.8 5 | 413.5 409.6 388.1 | ||||
| 700 6 | C | ||||||
| 715 6 | C | ||||||
| 726.3 3 | B | 274.3 5 338.2 5 346.6 5 362.9 5 421.6 5 | 452.0 388.1 379.7 363.4 304.7 | ||||
| 745 6 | C | ||||||
| 797.0 6 | B | 356.9 5 494.1 5 ? | 440.1 302.9 | ||||
| 800.6 7 | B | 274.1 5 497.7 5 ? | 526.5 302.9 | ||||
| 810 6 | C | ||||||
| 859 6 | C | ||||||
| 910 6 | C | ||||||
| 958 6 | C | ||||||
E(level): From a least-squares fit to Eγ data from (p,nγ)
E(γ): From 148Nd(p,nγ) dataset
M(γ): From α data in 148Pm IT decay
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 75.70 | 1-,2- | 75.7 5 | M1 | 3.45 | α=3.45 8, α(K)=2.93 7, α(L)=0.413 10, α(M)=0.0881 21, α(N)=0.0199 5, α(O)=0.00299 7, α(P)=0.000188 5 | |
| 137.9 | 5-,6- | 41.29 d 11 % IT = 4.2 6 % β- = 95.8 6 | 62.2 5 | E4 | 1.23×104 | B(E4)(W.u.)=0.0073 +13-12, α=1.23E4 7, α(K)=30.8 8, α(L)=9.1E3 5, α(M)=2.58E3 15, α(N)=569 34, α(O)=63 4, α(P)=0.0395 22 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 137.9 | 5-,6- | 41.29 d 11 % IT = 4.2 6 % β- = 95.8 6 | μ=1.8 2 (2019StZV,1963Gr10) %IT=4.2 6. From 4.6 5 (1971Mo04, 148Pm IT decay dataset) modified to conform to a lower Iγ(1465) adopted in the decay of 148Pm g.s. E(level): %IT=4.2 6. From 4.6 5 (1971Mo04, 148Pm IT decay dataset) modified to conform to a lower Iγ(1465) adopted in the decay of 148Pm g.s. |