ADOPTED LEVELS for 244Cf
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 146, 387 (2017) | Cutoff date: 31-Aug-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-4.55×103 keV SY | S(n)= 7.58×103 keV SY | S(p)= 4500 keV 5 | Q(α)= 7329.0 keV 18 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 248Fm α decay | B | 244Es ε decay |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0.0 | A | 0+ | 19.4 m 6 % α ≤ 100 |
| 37 22 | A | 2+ | |
| 0+X | % SF ≤ 100 |
| E(level) (keV) | Jπ(level) | T1/2(level) | |||||
| Band 1 - K=0 g.s. band | |||||||
| 0.0 | 0+ | 19.4 m 6 % α ≤ 100 | |||||
| 37 22 | 2+ | ||||||
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 19.4 m 6 % α ≤ 100 | Only α decay has been observed. E(level): Only α decay has been observed. K=0 g.s. band. |
| 37 | 2+ | E(level): K=0 g.s. band. | |
| 0+X | % SF ≤ 100 | Only the SF decay has been identified. E(level): Only the SF decay has been identified. |
Identification
1956Ch43: 244Cf was produced from 244Cm(α,4n) with α beam from the 60-inch cyclotron of the Crocker Laboratory. The product nuclei after subsequent chemical separation were measured in a α pulse height analyzer. 244Cf was identified and found to decay by emission of 7.1 MeV α particles with a half-life of 25 minutes.
Systematic studies/Compilation/Evaluation:
2016Pr01: Compilation, evaluation for B(E2), T1/2 and deformation parameter
Theoretical studies:
2017Da09, 2017Zh03, 2017Ph01, 2016Su09, 2015Ba24, 2014De43, 2013Ra05, 2013Se17, 2013Is13, 2012Is08, 2011Qi06, 2011Zh36, 2009De32, 2009Ni06, 1985Po23, 1979Po23, 1997Mo25: Calculated α decay half-life
2015Ad15: Calculate α decay half-life and branching ratios
2015Me09: Calculate Qα and T1/2
2010Wa31: Calculated relative intensities of α decay to rotational states in the framework of the generalized liquid drop model (GLDM) and improved Royer’s formula.
2005Re16: Calculated spontaneous fission half-lives
1984Eg01: Analysis of yrast states, backbending and alignment
1983Bo15: Calculated equilibrium deformations and static electric moment
1980Du07: Calculated moment of inertia
1984Eg01, 1995Mo29: Calculated equilibrium deformations
2014De43, 2012Zh01, 1995Mo29: Calculated deformation parameters
1993Sa05: Calculated B(E2)(0+ to 2+)
1989St20: Partial half-life for SF decay was calculated
1993Gr15: Calculated relative fission/alpha-decay yields
2009Mo18, 1983Ga05, 1979Kl08, 1976Iw02: Calculated fission barriers heights
1980Ga07: Calculated fission barrier height ≈6 MeV from delayed-fission data following electron capture decay of 244Es
1979Kl08: Calculated delayed-fission probability
1974YaZI: Calculated lowest-state energies for the first and second saddle in fission
Q-value: ΔQ-=180, ΔSN=110 (syst, 2017Wa10)