ADOPTED LEVELS for 229Np
Authors: F.G. Kondev, J.K. Tuli and E. Browne | Citation: Nucl. Data Sheets 208, 397 (2026) | Cutoff date: 23-Oct-2025
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-3.59×103 keV 12 | S(n)= 8100 keV SY | S(p)= 2.71×103 keV 10 | Q(α)= 7020 keV 60 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 233Am α decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0.0 | A | (5/2+) | 3.91 m 14 % ε = 32 11 % α = 68 11 |
| 160 50 ? | A | (5/2-) |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (5/2+) | 3.91 m 14 % ε = 32 11 % α = 68 11 | Eα=6893 keV 23 (2004Sa05, 2000Sa52), 6890 keV 20 (1968Ha14) and and 6910 keV 30 (2018Mi11). |
| 160 | (5/2-) | Probable configuration=π5/2[523]. |