ADOPTED LEVELS, GAMMAS for 158Pm
Author: N. Nica | Citation: Nucl. Data Sheets 141, 1 (2017) | Cutoff date: 1-Feb-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=6161 keV 14 | S(n)= 4863 keV 15 | S(p)= 9.92×103 keV 3 | Q(α)= -3.41×103 keV 11 | ||
| S(2n)= 11068 keV 15 | S(2p)= 22100 keV 3 | ||||
| Reference: 2017WA10 | |||||
| References: | |||
| A | 158Pm IT decay | ||
| E(level) (keV) | XREF | T1/2(level) | E(γ) (keV) | Final Levels | |
| 0.0 | 4.8 s 5 % β- = 100 | ||||
| X? | A | ||||
| 121+X | A | > 16 µs % IT = ? | 121 | X | |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| X | If the 121γ is unique then x=0 and this level is the g.s. E(level): If the 121γ is unique then x=0 and this level is the g.s. |
| E(level) | E(gamma) | Comments |
| 121+X | 121 | E(γ): measured by 2015YoZX and 2015YoZY |
1987Gr12, 1988GrZY, 1990An31 (same group): measured 252Cf spontaneous fission products, on-line isotope separation, K X-ray decay rates, Eγ, Iγ, γ-γ and β-γ coin, T1/2
2015YoZX, 2015YoZY (same group): used reaction 9Be(238U, F), E=345 MeV/nucleon, on-line isotope separation, and measured Eγ, Iγ, Eβ, Iβ, T1/2 of isomers in μs range. Data are preliminary
Observed in 252Cf spontaneous fission followed by mass separation (1987Gr12,1990An31).