ADOPTED LEVELS, GAMMAS for 247Es
Author: C. D. Nesaraja | Citation: Nucl. Data Sheets 125, 395 (2015) | Cutoff date: 31-Mar-2014
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-3100 keV SY | S(n)= 7400 keV SY | S(p)= 2802 keV 20 | Q(α)= 7462 keV 20 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 251Md α decay | B | 247Fm ε decay (31 S) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | A | (3/2-) | ||||||
| 0+X | AB | (7/2+) | 4.55 m 26 % α ≈ 7 % ε ≈ 93 | |||||
| 50.9+X 3 | A | (9/2+) | 50S | | (M1) | 0+X | (7/2+) | |
| 293.69+X 10 | A | (7/2-) | 242.7 3 293.7 1 | 16 2 100 | (E1) (E1) | 50.9+X 0+X | (9/2+) (7/2+) | |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0+X | (7/2+) | 4.55 m 26 % α ≈ 7 % ε ≈ 93 | Observation of the ground-state in 247Fm ε decay is indirect. E(level): Observation of the ground-state in 247Fm ε decay is indirect. |
| 293.69+X | (7/2-) | Proposed configuration=7/2[514] (based upon multipolarities proposed for depopulating γ transitions). E(level): Proposed configuration=7/2[514] (based upon multipolarities proposed for depopulating γ transitions). |
| E(level) | E(gamma) | Comments |
| 50.9+X | 50 | E(γ): γ transition has not been observed. Eγ is from level energies. Transition considered to be highly converted (2006Ch52) |
| 293.69+X | 242.7 | M(γ): E2 is also possible but less likely |
Identification:
1989Ha27: Observed in 249Cf(p,3n) and 238U(14N,5n)
1973Es01: Produced from 243Am(12C,α4n). Identified by emitted α energies, T1/2 and excitation functions
1967Mi06: Synthesized from 238U(14N,5n). Identified by emitted α energies, T1/2 and excitation functions.
Theoretical studies:
2012Ni16: α decay T1/2 for transitions from ground-state to favored rotational bands using Multicluster Channel Model.
2012Zh01: Comparison of the low-lying one-quasineutron band for Z=99 isotopes between the experimental values and calculated values using the cranked shell model (CSM) with pairing correlations
2003Re14: Calculated binding energy, Q(α) and deformations using the deformed RMF theory
2002Lo05: Calculated binding energies, pairing gaps and deformations using RMF+BCS theory
2002Du16: Calculated partial half-lives for α and cluster decays
1997Mo25: Calculated ground-state binding energy, proton and neutron pairing gaps, neutron and proton separation energies, Q values and partial half-lives for α and β decays
1996St28: α decay through deformed barrier and anisotropies for alphas were calculated
1993Bu09: Calculated partial α decay half-life, α branching, and nuclear radius using the cluster model predictions
1981Mo24: Calculated ground-state electric multipole moments Q2, Q4 and masses
1980Ho32: Calculated mass excess, S(n), S(p), Q(β), Q(α), fission-barrier heights, deformation and energy at saddle-point
Systematic Studies:
2006Ch52: Systematics studies of one-quasiparticle states in Es isotopes using Skyrme-HFB calculations
Q-value: ΔQ(β-=120, ΔS(n)=220 (syst, 2012Wa38)