176DY    COMMENTS                                                ENSDF    202102
176DY  H TYP=FUL$AUT=BALRAJ SINGH$CIT=ENSDF$CUT=31-JAN-2021$                    
176DY C  TITL$NUCLEAR DATA SHEETS FOR 176DY                                     
176DY c  AUTH$BALRAJ SINGH                                                      
176DY c  INST$Department of Physics and Astronomy,                              
176DY#c       McMaster University, Hamilton, Ontario,                           
176DY#c       Canada, L8S 4M1                                                   
176DY c  ABST$Information about the identification and production of {+176}Dy   
176DY2c  nuclide from 2018Sh11 is presented.                                    
176DY c  CUT$Literature available up to Jan 31, 2021 has been consulted.        
176DY C  CIT$ENSDF                                                              
176DY c  FUND$                                                                  
                                                                                
176DY    ADOPTED LEVELS                                          ENSDF    202102
176DY  H TYP=FUL$AUT=BALRAJ SINGH$CIT=ENSDF$CUT=31-JAN-2021$                    
176DY  Q 5320      CA 5150   CA 12640  CA -2990  CA    2019Mo01                 
176DY cQ $S(2n)=8920, S(2p)=23410 (theory, 2019Mo01)                            
176DY cQ $Q(|b{+-}n)=1130 (deduced by evaluator from                            
176DY2cQ theoretical values in 2019Mo01)                                        
176DY c  2018Fu08: {+176}Dy nuclide produced and identified at the              
176DY2c  RIBF-RIKEN facility using the {+9}Be({+238}U,F) reaction with a        
176DY3c  {+238}U{+86+} beam of E=345 MeV/nucleon produced by the RIBF           
176DY4c  accelerator complex. Target={+9}Be with a thickness of 2.92 mm.        
176DY6c  Nuclidic identification (PID) was made by determining the atomic number
176DY7c  Z and mass-to-charge (A/Q) ratio of the ions using magnetic rigidity,  
176DY7c  time-of-flight, and energy loss (tof-B|r-|DE method) using the BigRIPS 
176DY8c  fragment separator. The time-of-flight was measured using thin plastic 
176DY9c  scintillators placed at foci of the BigRIPS. The B|r values were       
176DYAc  deduced from trajectory reconstruction of measured position and angle  
176DYBc  of fragments at each focus using parallel plate avalanche counters     
176DYCc  (PPACs). For|DE values, separated fragments were transported to an     
176DYDc  achromatic focus and implanted in a Si stack with 14 layers of Si PIN  
176DYEc  detectors, surrounded by four HPGe clovers for isomer tagging by       
176DYFc  detecting delayed gamma rays from known isomeric states in fission     
176DYGc  fragments. Comparison of measured cross sections with theoretical      
176DYHc  calculations using LISE{++} abrasion-fission (AF) model.               
176DY c  Theoretical calculations: seven primary reference in the NSR database  
176DY2c  (available at www.nndc.bnl.gov/nsr/), six for nuclear structure and    
176DY3c  one for radioactive decay half-lives and other properties              
176DY  L 0            0+                                                        
176DY2 L %B-=100 $ %B-N=?                                                       
176DY cL $Only |b{+-} decay mode is expected, followed by delayed-neutron decay,
176DY2cL thus 100% |b{+-} decay is assigned by inference.                       
176DY cL $Theoretical T{-1/2}=867.2 ms, %|b{+-}n=0 (2019Mo01)                   
176DY cL $Theoretical T{-1/2}=1.35 s, %|b{+-}n=0.3 (2016Ma12)                   
176DY cL $A total of three counts were assigned to {+176}Dy for spectrometer    
176DY2cL setting on Gd.                                                         
176DY cL $Production |s=7.5 pb {I+73-41} for Gd setting, with 50% systematic    
176DY2cL uncertainty on |s value (2018Fu08)                                     
176DY cL T$lower limit from time-of-flight of 550 ns given in 2018Fu08.         
176DY2cL Actual half-life is expected to be much longer as suggested by the     
176DY3cL theoretical values of 867 ms (2019Mo01) and 1.35 s (2016Ma12). From a  
176DY4cL general decreasing trend of half-lives with increasing neutron number, 
176DY5cL T{-1/2} for {+176}Dy is expected to be <2 s, based on measured         
176DY6cL half-lives of 4.1 s for {+171}Dy, 3.9 s for {+172}Dy, and              
176DY7cL 1.43 s for {+173}Dy, available in literature.