ADOPTED LEVELS for 261Sg
Author: Agda Artna-cohen | Citation: Nucl. Data Sheets 88, 155 (1999) | Cutoff date: 31-Jul-1999
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-5.13×103 keV SY | S(n)= 6.61×103 keV 3 | S(p)= 2.96×103 keV SY | Q(α)= 9714 keV 15 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 265Hs α decay (2.0 MS) | B | 265Hs α decay (0.75 MS) |
| E(level) (keV) | XREF | T1/2(level) |
| 0.0 | AB | 0.23 s 6 % α ≈ 100 % SF < 1 |
| 56 21 | A | |
| 127 21 | A | |
| 156 21 | B | |
| 185 21 | A | |
| 212 21 | B | |
| 396 21 | B |
E(level): From 265Hs decays. Based on the assumption that the highest energy α group from 265Hs goes to the g.s. of 261Sg.
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0.23 s 6 % α ≈ 100 % SF < 1 | Both 265Hs isomers seem to feed the g.s. of 261Sg. No significant difference is observed between the Eα and T1/2 of the daughter, 261Sg, from the decay of either 265Hs isomer (1999He11). E(level): Both 265Hs isomers seem to feed the g.s. of 261Sg. No significant difference is observed between the Eα and T1/2 of the daughter, 261Sg, from the decay of either 265Hs isomer (1999He11). |
Calculations, compilations:
Favored α decay: 1993Bu09
g.s. properties: 1997Mo25, 1995Mo29
Pion decay: 1991Io03
Single-particle Nilsson levels: 1994Cw02
1994Cw02 calculate the following single-particle level sequence: g.s. 1/2[620], 0.02 MeV 3/2[622], 0.03 MeV 11/2[725], 0.07 MeV 7/2[613], 0.29 MeV 9/2[615], 0.87 MeV 9/2[734]
Assignment: 208Pb(54Cr,n) 4.8 to 5.0 MeV/α, α correlation with daughter 257Rf and granddaughter 253No (1985Mu11,1984Mu17). 208Pb(58Fe,n)265Hs E=5.04 2 MeV/α, daughter of 265Hs, parent of 257Rf (1987Mu15). 208Pb(54Cr,n) E=5.5 MeV/α, α’s observed (1984Og03).
1997Ho13, 1997Ho03 report a 34 ms 9.468 MeV α in the decay chain from 269110 and assign it to 261Sg.
Q-value: Note: Current evaluation has used the following Q record -5200 syst 6400 syst 2800 syst 9800 syst 1995Au04
Q-value: Estimated ΔQ(β-)=400, ΔS(n)=300, ΔS(p)=400, ΔQ(α)=70 (1995Au04)