161OS    ADOPTED LEVELS                                          11NDS    201111
161OS  H TYP=FUL$AUT=C. W. Reich$CIT=NDS 112,2497 (2011)$CUT=1-Jun-2011$        
161OS D  NEW DATA SET PREPARED (FEBRUARY, 2010) BY CW REICH AND UPDATED         
161OS2D   (FEBRUARY, 2011)                                                      
161OS  Q                       6.E2    SY7066    13    2012WA38                 
161OS cQ $Note: Current evaluation has used the following Q record              
161OS2cQ                                   7066  {I12}                          
161OS cQ QA        Computed from E|a=6890 {i12}, as reported by 2010Bi03,       
161OS2cQ assuming that the |a transition connects the two ground states.        
161OS3cQ Note that 2003Au03 (and 2009AuZZ) list no Q values for {+161}Os.       
161OS c  All data are from the study reported by 2010Bi03. The evaluator has    
161OS2c  assumed that this is a subsequent version of the information           
161OS3c  presented in 2008PaZV, which has most of the same authors.             
161OS c  {+161}Os produced via the {+106}Cd({+58}Ni,3n) reaction, with values of
161OS2c  E({+58}Ni)=290, 300 and 310 MeV. Enriched (96.5%) self-supporting      
161OS3c  target of thickness 1.1 mg/cm{+2}. Reaction products were separated    
161OS4c  in-flight in a gas-filled separator and implanted into double-sided    
161OS5c  silicon-strip detectors. Measured T{-1/2}, E|a and generic relations   
161OS6c  among members of the decay chain.                                      
161OS c  2010Bi03 report |a peaks having energies of 6890 {i12} and             
161OS2c  6580 {i30}, with the latter having a branching ratio=5.5 {I31}-22%.    
161OS3c  These authors assign these as transitions to the {+157}W g.s. and an   
161OS4c  excited state at 318 {i30}, respectively. With this identification,    
161OS5c  Q(|a)=7066 {i12} is implied.                                           
161OS  L   0          (7/2-)             0.64 MS 6                              
161OS2 L %A AP 100                                                              
161OS cL E         assumes that the observed activity represents the {+161}Os   
161OSxcL g.s.                                                                   
161OS cL %A        The theoretical calculations of 1997Mo25 give a value of     
161OS2cL 167 ms for the |b decay halflife of {+161}Os, suggesting that |a decay 
161OS3cL is the dominant decay mode for this nuclide.                           
161OS cL J         proposed configuration is |nf{-7/2}, proposed by 2010Bi03    
161OS2cL based on an analysis of the |a branching to the {+157}W levels,        
161OS3cL assumed to Be (7/2-) and (9/2-) for the g.s. and 318-keV,              
161OS4cL respectively. The {+157}W g.s. assignment was proposed by 2008PaZV     
161OS5cL based on the observation that, among the expected available orbitals,  
161OS6cL only |nf{-7/2} accounts for the |e feeding with comparable intensities 
161OS7cL to the 11/2- and 1/2+ levels in the daughter nucleus, {+161}Ta.        
161OS cL T         from analysis of the decay of the |a peaks using the method  
161OS2cL of maximum likelihood, 2010Bi03 deduce T{-1/2}=640 |ms {i60}. 2008PaZV 
161OS3cL report T{-1/2}=590 |ms.