ADOPTED LEVELS, GAMMAS for 154Ce
Author: N. Nica | Citation: Nucl. Data Sheets 200, 2 (2025) | Cutoff date: 22-Aug-2022
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=5640 keV SY | S(n)= 5380 keV SY | S(p)= 13450 keV SY | Q(α)= -4760 keV SY | ||
| Reference: 2021WA16 |
| References: | |||
| A | 252Cf,248Cm SF decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | A | 0+ | 0.722 s 14 % β- = 100 % β-n = ? | |||||
| 76.30 15 | A | (2+) | 76.30 15 | 100 | [E2] | 0.0 | 0+ | |
| 252.30 18 | A | (4+) | 176.0 1 | 100 | [E2] | 76.30 | (2+) | |
| 520.60 21 | A | (6+) | 268.3 1 | 100 | [E2] | 252.30 | (4+) | |
| 872.9 3 | A | (8+) | 352.3 2 | 100 | [E2] | 520.60 | (6+) | |
E(level): From least-squares fit to γ energies.
Jπ(level): From 2020Ur03 (252Cf,248Cm SF decay) based on the assumption that this is the yrast g.s. band
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Yrast g.s. band | |||||||
| 0.0 | 0+ | 0.722 s 14 % β- = 100 % β-n = ? | |||||
| 76.30 15 | (2+) | 76.30 15 | 100 | [E2] | 0.0 | 0+ | |
| 252.30 18 | (4+) | 176.0 1 | 100 | [E2] | 76.30 | (2+) | |
| 520.60 21 | (6+) | 268.3 1 | 100 | [E2] | 252.30 | (4+) | |
| 872.9 3 | (8+) | 352.3 2 | 100 | [E2] | 520.60 | (6+) | |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 0.722 s 14 % β- = 100 % β-n = ? | E(level): Yrast g.s. band. |
| 76.30 | (2+) | E(level): Yrast g.s. band. | |
| 252.30 | (4+) | E(level): Yrast g.s. band. | |
| 520.60 | (6+) | E(level): Yrast g.s. band. | |
| 872.9 | (8+) | E(level): Yrast g.s. band. |
2017Wu04: The 154Ce nuclide was produced at the RIBF-RIKEN facility using the 9Be(238U,F) reaction at E=345 MeV/nucleon. Two experiments, optimized for the transmission of 158Nd and 170Dy ions, were carried out with average beam intensities of 7 pnA and 12 pnA, respectively. The identification of the nuclide of interest was made in the BigRIPS separator by determining the atomic number and the mass-to-charge ratio of the ion using the tof-Bρ-ΔE method. The reaction products were transported through the ZeroDegree Spectrometer and implanted into the beta-counting system WAS3ABi that was surrounded by the EURICA array comprising of 84 HPGe detectors. The typical implantation rate was 100 ions/s. Measured: implanted ion-β--t, implanted ion-β--γ-t and implanted ions-γ-t correlations. Deduced: T1/2.
Others: 1997Be12 and 1994Be24
Q-value: ΔQ(β-)=220, ΔS(n)=280, ΔS(p)=360, ΔQ(α)=200 (syst,2021Wa16)
Q-value: S(2n)=9380 280, S(2p)=25190 450, Q(β-n)=1280 200 (syst,2021Wa16)