ADOPTED LEVELS for 161Os

Author: C. W. Reich |  Citation: Nucl. Data Sheets 112,2497 (2011) |  Cutoff date: 1-Jun-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


S(p)= 6.E2 keV SYQ(α)= 7066 keV 13
Reference: 2012WA38

General Comments:

All data are from the study reported by 2010Bi03. The evaluator has assumed that this is a subsequent version of the information presented in 2008PaZV, which has most of the same authors.

161Os produced via the 106Cd(58Ni,3n) reaction, with values of E(58Ni)=290, 300 and 310 MeV. Enriched (96.5%) self-supporting target of thickness 1.1 mg/cm2. Reaction products were separated in-flight in a gas-filled separator and implanted into double-sided silicon-strip detectors. Measured T1/2, Eα and generic relations among members of the decay chain.

2010Bi03 report α peaks having energies of 6890 12 and 6580 30, with the latter having a branching ratio=5.5 31-22%. These authors assign these as transitions to the 157W g.s. and an excited state at 318 30, respectively. With this identification, Q(α)=7066 12 is implied.

Q-value: Note: Current evaluation has used the following Q record





E(level)
(keV)
Jπ(level) T1/2(level)
  0 (7/2-) 0.64 ms 6 
% α ≈ 100

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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