ADOPTED LEVELS for 252Fm
Authors: A.M. Mattera, S. Zhu, A.B. Hayes, E.A. Mccutchan | Citation: Nucl. Data Sheets 172, 543 (2021) | Cutoff date: 1-Jan-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-3695 keV SY | S(n)= 7210 keV 16 | S(p)= 4986 keV 8 | Q(α)= 7152.7 keV 20 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 256No α decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0.0 | A | 0+ | 25.39 h 4 % α = 99.9977 2 % SF = 0.0023 2 |
| 42.1 13 | A | 2+ |
| E(level) (keV) | Jπ(level) | T1/2(level) | |||||
| Band 1 - K=0+ GS band. | |||||||
| 0.0 | 0+ | 25.39 h 4 % α = 99.9977 2 % SF = 0.0023 2 | |||||
| 42.1 13 | 2+ | ||||||
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 25.39 h 4 % α = 99.9977 2 % SF = 0.0023 2 | T1/2(SF)=115 y 60, measured by 1966Rg04, gives %SF=0.0025 13. T1/2(SF)=125 y 8 was calculated from SF/α=0.0023% 2 (1984Ah02) and the total half-life of 25.39 h 4 (1984Ah02). E(level): T1/2(SF)=115 y 60, measured by 1966Rg04, gives %SF=0.0025 13. T1/2(SF)=125 y 8 was calculated from SF/α=0.0023% 2 (1984Ah02) and the total half-life of 25.39 h 4 (1984Ah02). K=0+ GS band. |
| 42.1 | 2+ | E(level): K=0+ GS band. |