Nuclear data explorer · compound nucleus
148Pm
148Pm is formed when 147Pm + n fuse. Its levels just above each threshold are the resonances that set those reactions' rates.
Channels and what has been measured
Every EXFOR reaction that forms 148Pm: entrance pair (rows) and the quantities measured (columns), with the energies covered.
| Reaction | Datasets | σ | ωγ | MACS | other | Fitted in evaluation |
|---|---|---|---|---|---|---|
| 147Pm(n,γ)148Pm | 69 | 425 meV | 25.3 eV – 6.9 eV | 445 keV – 100 keV | 1925 meV – 750 keV |
Level scheme
Adopted levels of 148Pm from ENSDF, with the particle thresholds and the Gamow window of the selected channel drawn across them.
- level in the window with a measured ωγ
- level in the window with no ωγ in EXFOR
- Jπ in parentheses or in italics is tentative.
Resonances in the window
Levels between the 147Pm(n,γ)148Pm threshold (S = 5895.3 keV) and the top of the Gamow window at T9 = 0.09 (50 keV above it), with the resonance strengths ωγ EXFOR holds for them.
Looking for measured strengths…
| E (keV) | E_r (keV, c.m.) | Jπ | T½ or Γ | ωγ measured |
|---|---|---|---|---|
| ENSDF lists no level in this window. | ||||
A strength is matched to a level when its resonance energy plus the threshold lies within max(3 keV, 3σ) of the level energy.
Levels of 148Pm (44)
| E (keV) | Jπ | T½ or Γ | γ branches |
|---|---|---|---|
| 0 | 1- | T½ = 464000 s | – |
| 75.7 | 1-,2- | – | → 0 |
| 137.1 | – | – | – |
| 137.9 | 5-,6- | T½ = 3.57e+6 s | → 75.7 |
| 215.3 | – | – | → 137.1 |
| 219.9 | – | – | → 0 |
| 292 | – | – | → 137.9, → 75.7, → 0 |
| 302.9 | – | – | → 137.9 |
| 304.7 | – | – | → 219.9, → 75.7, → 0 |
| 308.9 | – | – | → 219.9, → 137.9, → 75.7, → 0 |
| 363.4 | – | – | → 215.3, → 137.9 |
| 379.7 | – | – | → 302.9, → 292, → 219.9, → 0 |
| 385.6 | – | – | → 215.3, → 137.9 |
| 388.1 | – | – | → 308.9, → 304.7, → 292, → 137.9, → 75.7, → 0 |
| 409.6 | – | – | → 215.3, → 137.9, → 75.7 |
| 413.5 | – | – | → 292, → 75.7 |
| 440.1 | – | – | → 308.9, → 302.9, → 292, → 137.9, → 75.7 |
| 452 | – | – | → 363.4, → 302.9, → 292, → 137.9, → 75.7 |
| 462 | – | – | – |
| 526.5 | – | – | → 413.5, → 302.9, → 215.3 |
| 529.4 | – | – | → 409.6, → 388.1 |
| 543.4 | – | – | → 413.5, → 215.3, → 137.9 |
| 545.7 | – | – | → 388.1, → 379.7, → 308.9, → 304.7, → 292, → 137.9 |
| 550.3 | – | – | → 388.1, → 363.4, → 302.9, → 292, → 137.9 |
| 561.3 | – | – | → 388.1, → 379.7, → 219.9, → 75.7 |
| 564.2 | – | – | → 409.6, → 388.1, → 379.7, → 363.4, → 292, → 137.9 |
| 573.1 | – | – | → 440.1, → 379.7, → 308.9, → 304.7, → 292, → 137.9 |
| 611.2 | – | – | → 413.5, → 215.3 |
| 622.7 | – | – | → 545.7, → 304.7 |
| 641.9 | – | – | → 308.9, → 219.9 |
| 655.7 | – | – | → 440.1, → 409.6, → 385.6 |
| 660.5 | – | – | → 363.4, → 308.9 |
| 669.6 | – | – | → 440.1, → 385.6, → 308.9, → 304.7 |
| 672.9 | – | – | → 413.5, → 409.6, → 388.1 |
| 700 | – | – | – |
| 715 | – | – | – |
| 726.3 | – | – | → 452, → 388.1, → 379.7, → 363.4, → 304.7 |
| 745 | – | – | – |
| 797 | – | – | → 440.1, → 302.9 |
| 800.6 | – | – | → 526.5, → 302.9 |
| 810 | – | – | – |
| 859 | – | – | – |
| 910 | – | – | – |
| 958 | – | – | – |