ADOPTED LEVELS for 265Hs
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-)=-5.8×103 keV SY | S(n)= 6.73×103 keV 4 | S(p)= 2.45×103 keV SY | Q(α)= 10470 keV 16 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 26910 α decay | ||
| E(level) (keV) | XREF | T1/2(level) |
| 0.0 | 2.0 ms +3-2 % α ≈ 100 % SF ≤ 1 | |
| ≥300 | 0.75 ms +17-12 % α ≈ 100 % SF ≤ 1 | |
| 0.0+X | A |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 2.0 ms +3-2 % α ≈ 100 % SF ≤ 1 | No SF observed, no evidence for β decay found (1987Mu15). No SF observed (1984Og03,1984Og02). E(level): No SF observed, no evidence for β decay found (1987Mu15). No SF observed (1984Og03,1984Og02). | |
| 300 | 0.75 ms +17-12 % α ≈ 100 % SF ≤ 1 | E(level)=303 22 (from Eα of 1999He11) if the highest energy α groups of both 265Hs isomers feed the g.s. of 261Sg. E(level): E(level)=303 22 (from Eα of 1999He11) if the highest energy α groups of both 265Hs isomers feed the g.s. of 261Sg. |
Calculations, compilations:
Favored α decay: 1993Bu09
g.s. properties: 1997Mo25, 1995Mo29
Pion emission: 1991Io03
Single-particle Nilsson levels: 1994Cw02
1994Cw02 calculate the following single-particle level sequence: g.s. 7/2[613], 0.00 MeV 3/2[622], 0.01 MeV 11/2[725], 0.02 MeV 1/2[620], 0.09 MeV 9/2[615], 0.90 MeV 9/2[734].
Assignment:
208Pb(58Fe,n) excit. Parent of 261Sg, grandparent of 257Rf; correlated α chains were measured (1995Ho03,1984Mu17,1987Mu15). 208Pb(58Fe,n) 5.5 MeV/nucleon. Decay product 253Es was detected by radiochemical methods (1984DeZO,1984Og03).
Q-value: Note: Current evaluation has used the following Q record -6100 syst 6600 syst 2400 syst 10586 15 1995Au04
Q-value: Estimated ΔQ(β-)=600, ΔS(n)=300, ΔS(p)=400 (1995Au04)