ADOPTED LEVELS for 254Cf
Author: Balraj Singh | Citation: Nucl. Data Sheets 156, 1 (2019) | Cutoff date: 31-Jan-2019
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-649 keV 12 | S(n)= 6031 keV 12 | S(p)= 6880 keV SY | Q(α)= 5927 keV 5 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 254Es ε decay (39.3 H) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0 | A | 0+ | 60.5 d 2 % α = 0.31 2 % SF = 99.69 2 |
| 50 Syst. S | A | [2+] |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 50 | [2+] | XREF: α(?). |
1955Ha35: 254Cf produced and identified as daughter of 39.3H 254Es decaying by ε mode, measured half-life of 254Cf decay.
1955Be99, 1956Fi11, 1957Hu70, 1963Ph01, 1965Me02: half-life measurements, and %α decay mode by 1968Be21
Theoretical studies: consult the NSR database at www.nndc.bnl.gov for 86 references dealing with theoretical calculations of half-lives for different decay modes, binding energies, fission characteristics, and other nuclear structure aspects.
Q-value: Estimated uncertainty=360 for S(p) (2017Wa10)
Q-value: S(2n)=10836 11, S(2p)=12290 300 (syst) (2017Wa10)