ADOPTED LEVELS for 258Md
Author: Balraj Singh | Citation: Nucl. Data Sheets 144, 297 (2017) | Cutoff date: 25-Aug-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=210 keV SY | S(n)= 5378 keV 4 | S(p)= 4192 keV 6 | Q(α)= 7271.3 keV 19 | ||
| Reference: 2017WA10 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0 | (8-) | 51.50 d 29 % α = 100 |
| 0+X | (1-) | 57.0 m 9 % ε = 85 15 % α < 1.2 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (8-) | 51.50 d 29 % α = 100 | The upper limit on SF+ε+β- branching was determined by 1993Mo18 from the number of SF events detected. Other measurements: 1968Hu06, 1970Fi12. E(level): The upper limit on SF+ε+β- branching was determined by 1993Mo18 from the number of SF events detected. Other measurements: 1968Hu06, 1970Fi12. |
| 0+X | (1-) | 57.0 m 9 % ε = 85 15 % α < 1.2 | Decay branching ratios are from 1993Mo18. E(level): Decay branching ratios are from 1993Mo18. |
1968Hu06: first report of the identification of 258Md isotope
1970Fi12: 258Md produced in 255Es(α,n); measured T1/2, Eα, Iα, αγ-coin, α/(α+ε) ratio
1993Mo18: 258Md produced in 254Es(18O,14C), 254Es(22Ne,18O) reactions followed by mass separation, and chemical techniques
Theoretical studies: consult the NSR database at www.nndc.bnl.gov for about 15 references dealing with theoretical calculations of half-lives for different decay modes and other nuclear structure aspects.
Q-value: Estimated uncertainties (2017Wa10): 100 for Q(β-)
Q-value: S(2n)=11910 120, S(2p)=10080 100 (syst,2017Wa10)