ADOPTED LEVELS for 262Bh
Author: Y. Akovali | Citation: Nucl. Data Sheets 94, 131 (2001) | Cutoff date: 1-Aug-2001
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 6.7×103 keV SY | S(p)= 8.E2 keV SY | Q(α)= 10320 keV 15 | |||
| Reference: 2012WA38 |
| E(level) (keV) | T1/2(level) |
| 0.0+X | 102 ms 26 % α ≤ 100 |
| 0.0+Y | 8.0 ms 21 % α ≤ 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0+X | 102 ms 26 % α ≤ 100 | Level is populated in 266Mt α decay: the authors of 1997Ho14 observed that the 10682-, 10809- and 10848- keV α’s from 266Mt were correlated with the 9731-, 9831- and 10143- keV α’s from 262Bh, and pointed out that the three correlated α’s of 266Mt possibly decay from different 266Mt isomers. E(level): Level is populated in 266Mt α decay: the authors of 1997Ho14 observed that the 10682-, 10809- and 10848- keV α’s from 266Mt were correlated with the 9731-, 9831- and 10143- keV α’s from 262Bh, and pointed out that the three correlated α’s of 266Mt possibly decay from different 266Mt isomers. | |
| 0.0+Y | 8.0 ms 21 % α ≤ 100 | One photon at 382.9 in coincidence with an escape-α from this state was observed by 1984Mu07, and because of the short correlation time between the 266Mt α decay and the α escape, 1989Mu09 suggested that the 8.0-ms state is probably the isomer. However, the 382.9γ has been tentatively reassigned to 258Db decay (private communication from S. Hofmann; March 2000). E(level): One photon at 382.9 in coincidence with an escape-α from this state was observed by 1984Mu07, and because of the short correlation time between the 266Mt α decay and the α escape, 1989Mu09 suggested that the 8.0-ms state is probably the isomer. However, the 382.9γ has been tentatively reassigned to 258Db decay (private communication from S. Hofmann; March 2000). |
Theoretical studies:
For calculation of fission barrier, see 1985Cw01, 2000Ad15, 2001Mo07.
Partial half-life for SF decay was calculated by 1985Lo17, 2000Ho27.
Levels: Excited levels populated by 266Mt α decay are not adopted here because of possible multiple parent states with unknown level energies. See 266Mt α decay data set.
Q-value: Note: Current evaluation has used the following Q record 6945 syst 945 syst 10220 syst 1995Au04